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di sini TOPICAL TEST 8: SALTS
UJIAN TOPIKAL 8: GARAM
PAPER 1 KERTAS 1
1 Which of the following statements 4 Which of the following salts can be 7 Which of the following reagents are
best define the term ‘salt’? prepared by using double suitable to prepare lead (II) sulphate
Antara pernyataan yang berikut, manakah decomposition method? salt?
mentakrifkan istilah ‘garam’ dengan paling baik? Antara garam yang berikut, manakah boleh Antara reagen yang berikut, manakah sesuai
A Salt is formed when metal reacts disediakan dengan kaedah pengoksidaan untuk menyediakan garam plumbum (II) sulfat?
with an alkali. ganda dua? A Lead (II) oxide and sulphuric
Garam terbentuk apabila logam bertindak A Silver chloride acid.
balas dengan suatu alkali. Argentum klorida Plumbum (II) oksida dan asid sulfurik.
B Salt contains sodium ions and B Barium nitrate B Lead (II) carbonate and sulphuric
chloride ions. Barium nitrat acid.
Garam mengandungi ion natrium dan ion C Sodium carbonate Plumbum (II) karbonat dan asid sulfurik.
klorida. Natrium karbonat C Lead (II) nitrate and potassium
C Salt is formed from a weak Van D Lead (II) nitrate sulphate.
der Waals’ forces of attraction. Plumbum (II) nitrat Plumbum (II) nitrat dan kalium sulfat.
Garam dibentuk daripada daya tarikan
D Lead (II) chloride and sodium
Van der Waals’ yang lemah.
5 Which of the following are the sulphate.
D Salt is formed when the hydrogen
ions in an acid is replaced by physical characteristics of salt Plumbum (II) klorida dan natrium sulfat.
metal or ammonium ions. crystal?
Antara yang berikut, manakah ialah sifat- 8 Diagram 1 shows the apparatus set-
Garam terbentuk apabila ion hidrogen
dalam suatu asid diganti oleh ion logam
sifat fizik bagi hablur garam? up to prepare silver chloride.
atau ion ammonia. I They have similar size. Rajah 1 menunjukkan susunan radas untuk
Mempunyai saiz yang sama. menyediakan argentum klorida.
2 Which of the following reaction can II They have fixed angle.
produce sodium nitrate and water? Mempunyai sudut yang tetap.
Antara tindak balas yang berikut, manakah
boleh menghasilkan natrium nitrat dan air?
III They have fixed geometrical
A Sodium chloride solution and shapes.
Mempunyai bentuk geometri yang tetap.
nitric acid.
Larutan natrium klorida dan asid nitrik. IV They have flat surface, straight
B Sodium sulphate solution and edges and sharp angles.
Mempunyai permukaan yang rata, sisi
nitric acid. yang lurus dan sudut yang tajam.
Larutan natrium sulfat dan asid nitrik. Diagram 1 Rajah 1
C Sodium hydroxide solution and A I, II and III only
I, II dan III sahaja
Which of the following is most
nitric acid. suitable to react with HCl to prepare
Larutan natrium hidroksida dan asid
B I, II and IV only
I, II dan IV sahaja AgCl?
nitrik. Antara yang berikut, manakah paling sesuai
D Sodium and dilute nitric acid. C I, III and IV only
untuk bertindak balas dengan HCl untuk
Natrium dan asid nitrik cair. I, III dan IV sahaja
menyediakan AgCl?
D II, III and IV only A Silver nitrate C Silver metal
3 Which of the following is true about II, III dan IV sahaja
Argentum nitrat Logam argentum
the soluble and insoluble salt?
Antara yang berikut, manakah benar tentang B Silver oxide D Silver Carbonate
garam larut dan garam tidak larut? 6 Which of the following substances Argentum oksida Argentum karbonat
can be used to prepare copper (II)
Soluble in Insoluble in chloride by reaction with 9 Which of the following mixture will
water water hydrochloric acid? react to produce an aqueous zinc
Larut dalam air Tidak larut dalam air
Antara bahan yang berikut, manakah boleh nitrate solution?
bertindak balas dengan asid hidroklorik Antara campuran yang berikut, manakah
A Silver chloride Sodium carbonate untuk menyediakan kuprum (II) klorida? akan bertindak balas untuk menghasilkan
Argentum klorida Natrium karbonat I Copper (II) oxide larutan akueus zink nitrat?
Kuprum (II) oksida I Zinc carbonate and dilute nitric
B Ammonium II Copper (II) nitrate acid.
Lead (II) sulphate
sulphate Plumbum (II) sulfat Kuprum (II) nitrat Zink karbonat dan asid nitrik cair.
Ammonium sulfat III Copper (II) carbonate II Zinc oxide and dilute nitric acid.
Kuprum (II) karbonat Zink oksida dan asid nitrik cair.
C Barium Aluminium IV Copper (II) hydroxide III Zinc oxide and potassium nitrate
sulphate nitrate Kuprum (II) hidroksida solution.
Barium sulfat Aluminium nitrat A I, II and III only Zink oksida dan larutan kalium nitrat.
I, II dan III sahaja IV Zinc and aqueous sodium nitrate
D Lead (II) B I, II and IV only solution.
Sodium I, II dan IV sahaja Zink dan larutan akueus natrium nitrat.
iodide hydroxide
Plumbum (II) C I, III and IV only A I and II only C III and IV only
Natrium hidroksida I, III dan IV sahaja I dan II sahaja III dan IV sahaja
iodida
D II, III and IV only B II and III only D I and IV only
II, III dan IV sahaja II dan III sahaja I dan IV sahaja
10 What substance can you use to
verify the cation and anion in a
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di sini TOPICAL TEST 8: SALTS
UJIAN TOPIKAL 8: GARAM
PAPER 1 KERTAS 1
sample of zinc sulphate salt 6.8 g kalsium karbonat bertindak balas 16 Which of the following pairs of
dengan 50 cm3 asid hidroklorik 1 mol dm–3,
solution? solutions will produce a white
HCl. Tentukan jisim kalsium karbonat yang
Apakah bahan yang boleh anda gunakan precipitate?
tidak mengambil bahagian dalam tindak
untuk mengesahkan kation dan anion dalam Antara pasangan larutan yang berikut,
balas.
suatu sampel larutan garam zink sulfat? manakah akan menghasilkan mendakan
[Jisim atom relatif: Ca = 40, C = 12, O =
Cation Anion 16] putih?
Kation Anion A 2.5 g C 4.3 g A Lead (II) nitrate and sodium
B 3.8 g D 5.5 g chloride.
A Nessler Dilute nitric acid and 13 Plumbum (II) nitrat dan natrium klorida.
reagent silver nitrate solution. Cu + 2HCl → CuCl2 + H2 B Magnesium nitrate and sodium
Reagen Nessler Asid nitrik cair dan larutan sulphate.
argentum nitrat. Magnesium nitrat dan natrium sulfat.
What is the mass of the salt
B Nessler Dilute hydrochloric C Calcium nitrate and sodium
produced when 100 cm3 of 2 mol
reagent acid and barium chloride.
dm–3 hydrochloric acid is used in the Kalsium nitrat dan natrium klorida.
Reagen Nessler chloride solution. reaction?
Asid hidroklorik cair dan D Barium sulphate and sodium
[Relative atomic mass: Cu = 64,
larutan barium klorida. chloride.
Cl = 35.5, H = 1] Barium sulfat dan natrium klorida.
Berapakah jisim garam yang dihasilkan
C Aqueous Dilute nitric acid and 17 Aluminium oxide reacts with
apabila 100 cm3 asid hidroklorik, 2 mol dm–3
ammonia silver nitrate solution. digunakan dalam tindak balas itu? sulphuric acid as follow:
Akueus Asid nitrik cair dan larutan [Jisim atom relatif: Cu = 64, Cl = 35.5, H = Aluminium oksida bertindak balas dengan
ammonia argentum nitrat. 1] asid sulfurik seperti yang berikut:
A 12.8 g C 17.9 g
B 13.5 g D 21.6 g Al2 + 3H2SO4→ Al2(SO4)3 + 3H2O
D Aqueous Dilute hydrochloric Al2 + 3H2SO4→ Al2(SO4)3 + 3H2O
ammonia acid and barium 14 5.0 cm3 of zinc (II) nitrate solution
Akueus chloride solution. requires 50 cm3 of 0.02 mol dm–3
ammonia Asid hidroklorik cair dan
If 5.1 g of aluminium oxide is used,
hydrochloric acid for complete which of the following is true about
larutan barium klorida.
reaction as the equation below: the solution of sulphuric acid?
5.0 cm3 larutan zink (II) nitrat memerlukan
11 Diagram 2 shows neutralisation 50 cm3 asid hidroklorik 0.02 mol dm–3 untuk [Relative atomic mass: Al = 27, O =
reaction between an acid and alkali. tindak balas lengkap seperti persamaan di 16]
bawah: Jika 5.1 g aluminium oksida digunakan,
Rajah 2 menunjukkan tindak balas
antara yang berikut, manakah benar tentang
peneutralan antara satu asid dan alkali. Zn2+ (aq) + 2Cl– (aq) → ZnCl2 (s) larutan asid sulfurik itu?
Zn2+ (ak) + 2Cl– (ak) → ZnCl2 (p) [Jisim atom relatif: Al = 27, O = 16]
A 50 cm3 of 1.0 mol dm–3 sulphuric
What is the molarity of the zinc (II) acid.
nitrate solution? 50 cm3 asid sulfurik 1.0 mol dm–3.
Apakah kemolaran larutan zink (II) nitrat? B 50 cm3 of 2.0 mol dm–3 sulphuric
–3
A 0.05 mol dm acid.
B 0.10 mol dm–3 50 cm3 asid sulfurik 2.0 mol dm–3.
C 0.20 mol dm–3 C 50 cm3 of 3.0 mol dm–3 sulphuric
D 0.50 mol dm–3 acid.
50 cm3 asid sulfurik 3.0 mol dm–3.
15 Which of the following is true about D 50 cm3 of 4.0 mol dm–3 sulphuric
the use of salt? acid.
Diagram 2 Rajah 2 Antara yang berikut, manakah benar tentang
50 cm3 asid sulfurik 4.0 mol dm–3.
What is the volume of alkali needed kegunaan garam?
to produce 0.745 g of salt? Salt Use 18 Sodium carbonate solution is added
[Relative atomic mass: K = 39, H = Garam Kegunaan
into copper (II) nitrate solution in an
1, O = 16, Cl = 35.5]
Berapakah isi padu alkali yang diperlukan A Ammonium Anti-acids experiment. What is the colour of
untuk menghasilkan 0.745 g garam? sulphate Anti-asid the precipitate obtained?
[Jisim atom relatif: K = 39, H = 1, O = 16, Ammonium sulfat Larutan natrium karbonat ditambahkan ke
Cl = 35.5] dalam larutan kuprum (II) nitrat dalam satu
A 5 cm3 C 15 cm3 B Sodium Food eksperimen. Apakah warna mendakan yang
diperoleh?
B 10 cm3 D 20 cm3 chloride preservative
Natrium klorida Pengawet makanan A Green
12 6.8 g of calcium carbonate reacts Hijau
with 50 cm3 of 1 mol dm–3 C Sodium nitrate Food flavouring B Yellow
Natrium nitrat Perisa makanan Kuning
hydrochloric acid, HCl. Determine
C White
the mass of calcium carbonate that Putih
D Silver bromide Photography
has not taken part in the reaction. Argentum bromida Fotografi D Brown
[Relative atomic mass: Ca = 40, C = Perang
12, O = 16]
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UJIAN TOPIKAL 8: GARAM
PAPER 1 KERTAS 1
19 Which of the following ions is in D Magnesium oxide A Lead (II) nitrate
white precipitate and insoluble in Magnesium oksida Plumbum (II) nitrat
excess sodium hydroxide solution? 22 Diagram 3 is a chart which shows B Calcium carbonate
Antara ion-ion yang berikut, manakah Kalsium karbonat
the reaction of substance X. C Magnesium carbonate
berbentuk mendakan putih dan tidak larut Rajah 3 ialah satu carta yang menunjukkan
dalam larutan natrium hidroksida yang Magnesium karbonat
tindak balas bagi bahan X.
berlebihan? D Zinc nitrate
A Al3+ Zink nitrat
B Pb2+
C Zn2+ 25 A few drops of sodium hydroxide,
D Mg2+ NaOH solution, is added to an
aqueous solution. A green
20 An aqueous iron (II) sulphate is precipitate is formed. Which of the
added with aqueous sodium following may be present in the
hydroxide and aqueous barium solution?
Beberapa titik larutan natrium hidroksida,
chloride. Which of the following is ditambahkan ke dalam suatu larutan akueus.
true about the observation of both Satu mendakan hijau terbentuk. Antara yang
the reaction? berikut, manakah mungkin hadir dalam
Diagram 3 Rajah 3 larutan itu?
Satu akueus ferum (II) sulfat ditambahkan
dengan akueus natrium hidroksida dan Which of the following is true about A Cu2+ C Fe3+
akueus barium klorida berasingan. Antara substances X, Y and Z? B Fe2+ D NH4+
yang berikut, manakah benar tentang Antara yang berikut, manakah benar tentang
pemerhatian bagi kedua-dua tindak balas? bahan X, Y dan Z?
26 A substance, P, dissolves in dilute
I X is a carbonate salt.
X ialah satu garam karbonat.
hydrochloric acid to produce a gas
Aqueous Aqueous which turn lime water milky. When
sodium barium chloride II Z contains copper (II) ions.
Z mengandungi ion kuprum (II). aqueous sodium hydroxide is added,
hydroxide Akueus barium
klorida III Z is a blue precipitate. a brown precipitate is formed. What
Akueus natrium
hidroksida Z ialah satu mendakan biru. is probably P?
IV Y is charged to Z by precipitation. Satu bahan P larut dalam asid hidroklorik
cair untuk menghasilkan gas yang
A White Yellow Y dicas kepada Z dengan pemendakan.
mengeruhkan air kapur. Apabila akueus
precipitate precipitate natrium hidroksida ditambah, satu mendakan
Mendakan putih Mendakan kuning A I, II and III only perang terbentuk. Apakah kemungkinan P?
I, II dan III sahaja A Iron (III) carbonate
B Green White B I, II and IV only Ferum (III) karbonat
precipitate precipitate I, II dan IV sahaja B Zinc carbonate
Mendakan hijau Mendakan putih C I, III and IV only Zink karbonat
I, III dan IV sahaja C Magnesium carbonate
C White Green D II, III and IV only Magnesium karbonat
precipitate precipitate II, III dan IV sahaja D Lead (II) carbonate
Mendakan putih Mendakan hijau Plumbum (II) karbonat
23 A few drops of ammonia solution is 27 When lead (II) nitrate is heated,
D Yellow White added to solution Y. Solution Y which of the following changes can
precipitate precipitate formed a white precipitate which
Mendakan kuning Mendakan putih be seen?
dissolves in excess ammonia Apabila plumbum (II) nitrat dipanaskan,
21 Solution X is mixed with the solution. Determine the ions in antara perubahan yang berikut, manakah
solution Y. boleh diperhatikan?
following reagents. I Brown gas evolved.
Beberapa titis larutan ammonia ditambahkan
Larutan X bercampur dengan reagen yang
ke dalam larutan Y. Larutan Y membentuk Gas perang dibebaskan.
berikut.
satu mendakan putih yang larut dalam II Gas that relights glowing wooden
• Dilute sulphuric acid. larutan ammonia berlebihan. Tentukan ion splint.
Asid sulfurik cair. dalam larutan Y.
Gas yang menyalakan kayu uji berbara.
• Iron (II) sulphate. A Ca2+ C Al3+ III No charges for the colour of
Ferum (II) sulfat. B Pb2+ D Zn2+ residue.
• Concentrated sulphuric acid. Tiada perubahan warna bagi baki.
Asid sulfurik pekat. 24 Solid P is heated to produce a brown IV Colour of residue is yellow when
gas and a gas that relights a glowing hot.
Brown ring is formed at the end of wooden splinter. The residue of the Baki adalah berwarna kuning apabila
the reaction. What is the solution X? reaction is yellow when hot and panas.
Cincin perang terbentuk pada akhir tindak A I and II only C III and IV only
balas. Apakah larutan X? turns into white when cold. What is
I dan II sahaja III dan IV sahaja
A Barium chloride solid P?
Pepejal P dipanaskan untuk menghasilkan B II and III only D I and IV only
Barium klorida
gas perang dan gas yang menyala kayu uji II dan III sahaja I dan IV sahaja
B Sodium nitrate
berbara semula. Baki tindak balas ialah
Natrium nitrat
C Potassium sulphate
kuning apabila panas dan menjadi putih 28 The following tests are conducted on
apabila sejuk. Apakah pepejal P? solution X as shown in Table 1.
Kalium sulfat
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UJIAN TOPIKAL 8: GARAM
PAPER 1 KERTAS 1
Ujian berikut dijalankan ke atas larutan X Antara ion yang berikut, manakah hadir C Magnesium oxide
seperti yang ditunjukkan dalam Jadual 1. dalam larutan X? Magnesium oksida
2+ 2+
Test Observation A Ca C Mg D Lead (II) carbonate
Ujian Pemerhatian B Zn2+ D Pb2+ Plumbum (II) karbonat
30 Which of the following reagents can
Add excess White precipitate 29 The following information explains be used to differentiate dilute
sodium that does not the properties of P. sulphuric acid and hydrochloric
hydroxide dissolve in excess Maklumat berikut menjelaskan sifat-sifat P. acid?
solution. sodium hydroxide • Insoluble. Antara reagen yang berikut, manakah boleh
Tambahkan larutan solution. digunakan untuk membezakan asid sulfurik
Tidak larut.
natrium hidroksida Mendakan putih yang cair dan asid hidroklorik?
berlebihan. tidak larut dalam
• Liberates gas when heated. I Sodium hydroxide solution
larutan natrium Membebaskan gas apabila dipanaskan. Larutan natrium hidroksida
hidroksida berlebihan. • When dilute acid is added, a gas II Barium nitrate solution
will be liberated. Larutan barium nitrat
Add excess White precipitate is Apabila asid cair ditambahkan, satu gas III Silver nitrate solution
ammonia formed. akan dibebaskan. Larutan argentum nitrat
solution. Mendakan putih
terbentuk. Which of the following is P? IV Iron (II) sulphate solution
Tambahkan larutan Antara yang berikut, manakah ialah P? Larutan ferum (II) sulfat
ammonia berlebihan.
A Barium sulphate A I and II only C III and IV only
Table 1 Jadual 1 Barium sulfat I dan II sahaja III dan IV sahaja
Which of the following ions is B Silver chloride B II and III only D I and IV only
present in solution X? Argentum klorida II dan III sahaja I dan IV sahaja
PAPER 2 KERTAS 2 SECTION A BAHAGIAN A
1 Table 1 shows the positive and negative ions in three salt
___________________________________________________
solutions.
Jadual 1 menunjukkan ion positif dan ion negatif dalam tiga larutan [1 mark / 1 markah]
garam.
(ii) Write the chemical equation for the reaction.
Tuliskan persamaan kimia untuk tindak balas itu.
Name of salt Positive ion Negative ion
Nama garam Ion positif Ion negatif ___________________________________________________
[2 marks / 2 markah]
Lead (II) nitrate Pb2+ NO3–
Plumbum (II) nitrat (iii) Name the precipitate formed.
Namakan mendakan terbentuk.
Sodium chloride Na+ Cl–
Natrium klorida
___________________________________________________
Barium carbonate [1 mark / 1 markah]
Ba2+ CO32–
Barium karbonat
(iv) Calculate the number of mole of sodium chloride
Table 1 Jadual 1 in the solution.
Hitungkan bilangan mol natrium klorida dalam larutan itu.
(a) What is another name for a negatively charged ion? ___________________________________________________
Apakah nama lain bagi ion bercas negatif? [1 mark / 1 markah]
________________________________________________________
[1 mark / 1 markah]
(b) Write the formula for lead (II) nitrate.
Tuliskan formula untuk plumbum (II) nitrat.
(v) Calculate the mass of precipitate formed.
[Relative atomic mass: Pb = 207, Cl = 35.5]
________________________________________________________ Hitungkan jisim mendakan yang terbentuk.
[1 mark / 1 markah] [Jisim atom relatif: Pb = 207, Cl = 35.5]
___________________________________________________
(c) When 50 cm3 of 1.0 mol dm–3 sodium chloride solution [2 marks / 2 markah]
is added to excess lead (II) nitrate, a precipitate is
2 Diagram 1 shows a series of tests performed on a colourless
formed.
Apabila 50 cm3 larutan natrium klorida 1.0 mol dm–3 ditambah ke solution that consisting of one cation and two anions.
dalam plumbum (II) nitrat berlebihan, satu mendakan terbentuk. Rajah 1 menunjukkan ujian bersiri yang dijalankan ke atas satu larutan
tak berwarna yang mengandungi satu kation dan dua anion.
(i) What is the colour of the precipitate?
Apakah warna mendakan?
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PAPER 1 KERTAS 1
Diagram 2 Rajah 2
Diagram 1 Rajah 1 (a) What is solid P?
(a) What is the gas produced in Test 1? Apakah pepejal P?
Apakah gas yang dihasilkan dalam Ujian 1?
________________________________________________________
________________________________________________________ [1 mark / 1 markah]
[1 mark / 1 markah]
(b) When solid P is heated, it decomposes to form solid R
(b) Complete the table below. and carbon dioxide.
Lengkapkan jadual di bawah. Apabila pepejal P dipanaskan, ia terurai untuk membentuk pepejal R
dan karbon dioksida.
Test Inference (i) What is solid R?
Ujian Inferens Apakah pepejal R?
___________________________________________________
1 [1 mark / 1 markah]
2 (ii) State the colour of R when it is cooled.
Nyatakan warna R apabila sejuk.
3 ___________________________________________________
[1 mark / 1 markah]
[3 marks / 3 markah]
(c) A student is adding dilute sulphuric acid with zinc metal (c) Nitric acid is added to solid P to form a colourless
to produce crystaline Z. solution Q.
Seorang murid mencampurkan asid sulfurik cair dengan logam zink Asid nitrik ditambahkan ke dalam pepejal P untuk membentuk satu
untuk menghasilkan hablur Z. larutan tak berwarna Q.
(i) Name the crystaline Z. (i) What is the colourless solution Q?
Namakan hablur Z. Apakah larutan tak berwarna Q?
___________________________________________________ ___________________________________________________
[1 mark / 1 markah] [1 mark / 1 markah]
(ii) Write the equation for the reaction. (ii) What will happen when nitric acid is added to
Tuliskan persamaan untuk tindak balas itu solid P?
___________________________________________________ Apakah akan terjadi apabila asid nitrik ditambahkan ke dalam
[1 mark / 1 markah] pepejal P?
___________________________________________________
[1 mark / 1 markah]
(iii) Calculate the mass of crystaline Z if 50.0 cm3 of (iii) What can be observed in S if excess ammonia,
0.02 mol dm–3 sulphuric acid is reacted with zinc NH3 solution is added to solution Q?
Apakah boleh diperhatikan dalam S jika larutan ammonia, NH3
metal. berlebihan ditambahkan ke dalam larutan Q?
[Relative formula mass of Z = 161] ___________________________________________________
Hitungkan jisim hablur Z jika 50 cm3 asid sulfurik 0.02 mol [2 marks / 2 markah]
dm–3 bertindak balas dengan logam zink.
[Jisim formula relatif bagi Z = 161]
___________________________________________________
(iv) When potassium iodide, KI is added to solution Q,
[3 marks / 3 markah] it forms yellow precipitate T. Identify T.
Apabila kalium iodida, KI ditambahkan ke dalam larutan Q, ia
membentuk mendakan kuning T. Kenal pastikan T.
3 Diagram 2 shows the chemical changes that occur on P. ___________________________________________________
Rajah 2 menunjukkan perubahan kimia yang berlaku di atas P.
[1 mark / 1 markah]
(v) Write the ionic equation for the reaction between
solution Q and potassium iodide, KI.
Tuliskan persamaan ion untuk tindakan balas antara larutan Q
dan kalium iodida, KI.
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PAPER 1 KERTAS 1
___________________________________________________ Apabila T dipanaskan dalam air panas, apakah boleh
[1 mark / 1 markah] diperhatikan?
___________________________________________________
(vi) When T is heated in hot water, what can be [1 mark / 1 markah]
observed?
SECTION B BAHAGIAN B
4 The following are three examples of carbonate salts that
can be prepared in the laboratory.
Berikut ialah tiga contoh garam karbonat yang disediakan dalam
makmal.
Iron (II) sulphate, FeSO4 (c) Diagram 3 shows the reaction and observation for salt
Ferum (II) sulfat, FeSO4 X.
Barium sulphate, BaSO4 Rajah 3 menunjukkan tindak balas dan pemerhatian untuk garam
Barium sulfat, BaSO4 X.
Zinc sulphate, ZnSO4
Zink sulfat, ZnSO4
(a) (i) From these examples, identify the soluble and
insoluble salts.
Daripada contoh-contoh tersebut, kenal pastikan garam
larut dan garam tak larut.
[3 marks / 3 markah]
(ii) Give the suitable reactants for the preparation of zinc
sulphate, ZnSO4.
Berikan bahan tindak balas yang sesuai untuk menyediakan
zink sulfat, ZnSO4. Diagram 3 Rajah 3
[2 marks / 2 markah] (i) What is gas Y? Write an equation for the reaction
between salt X and dilute acid.
Apakah gas Y? Tuliskan persamaan untuk tindak balas
(b) An experiment is carried out in a laboratory. Explain antara garam X dan asid cair.
the preparation method for preparing iron (II) [2 marks / 2 markah]
sulphate.
(ii) What is the observation in Z? Identify the ion
Satu eksperimen dijalankan dalam makmal. Terangkan kaedah
presented in Z.
penyediaan untuk menyediakan ferum (II) sulfat. Apakah pemerhatian dalam Z? Kenal pastikan ion yang
[10 marks / 10 markah] hadir dalam Z.
[3 marks / 3 markah]
SECTION C BAHAGIAN C
5 (a) You are given a lead (II) carbonate salt. State a way to Anda diminta menyediakan plumbum (II) sulfat kering. Bahan kimia
yang dibekalkan ialah:
determine the cation and anion in lead (II) carbonate
– Lead (II) carbonate
salt. Plumbum (II) karbonat
Anda diberi garam plumbum (II) karbonat. Nyatakan satu cara untuk
menentukan kation dan anion dalam garam plumbum (II) karbonat. – Sodium sulphate
Natrium sulfat
[6 marks / 6 markah] – Nitric acid
Asid nitrik
(b) You are require to prepare a dry lead (II) sulphate. The Describe and explain how to prepare the salt.
chemical supplied are:
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Huraikan dan terangkan bagaimana menyediakan garam tersebut.
[14 marks / 14 markah]
PAPER 3 KERTAS 3
1 An experiment was carried out to construct an ionic equation for the formation of barium chromate (VI) using the following steps:
Satu eksperimen telah dijalankan untuk membina persamaan ion bagi pembentukan barium kromat (VI) dengan langkah berikut:
● 5 cm3 of 1.0 mol dm–3 potassium chromate (VI) solution was filled in eight test tubes.
5 cm3 larutan kalium kromat (VI) 1.0 mol dm–3 diisikan ke dalam lapan tabung uji.
● 1 cm3 of 1.0 mol dm–3 barium chloride solution was added to the test tube a using burette.
1 cm3 larutan barium klorida 1.0 mol dm–3 ditambahkan ke dalam tabung uji A dengan buret.
● Experiment is repeated for test tubes B, C, D, E, F, G and H using different volume of barium chloride as shown in Diagram
1.1.
Eksperimen diulangkan bagi tabung uji B, C, D, E, F, G dan H dengan isi padu barium klorida yang berbeza seperti yang ditunjukkan di Rajah 1.1.
Diagram 1.1 Rajah 1.1
After 30 minutes, the height of the precipitate in each test tube was recorded. Diagram 1.2 shows the reading of the height of the
settled precipitate in each test tube.
Selepas 30 minit, ketinggian mendakan di dalam setiap tabung uji dicatatkan. Rajah 1.2 menunjukkan bacaan ketinggian mendakan dalam setiap tabung uji.
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Diagram 1.2 Rajah 1.2
(a) State one hypothesis for this experiment. (f) Plot a graph of the height of the precipitate against the
Nyatakan satu hipotesis bagi eksperimen ini. volume of barium chloride solution.
[3 marks / 3 markah] Plot graf bagi ketinggian mendakan melawan isi padu larutan barium
klorida.
(b) (i) Predict the colour of mixture solution in test tube [3 marks / 3 markah]
H at the end of the experiment.
Ramalkan perubahan warna dalam larutan campuran dalam (g) From the graph in (f), determine the minimum volume
tabung uji H pada akhir eksperimen. of barium chloride solution required for complete
[3 marks / 3 markah] reaction with 5 cm3 potassium chromate (VI) solution.
Daripada graf dalam (f), tentukan isi padu minimum larutan barium
(ii) State one inference of your answer in (b) (i). klorida yang diperlukan untuk lengkap tindak balas dengan 5 cm3
Nyatakan satu inferens bagi jawapan anda di (b) (i). larutan kalium kromat (VI).
[3 marks / 3 markah] [3 marks / 3 markah]
(c) State the colour of precipitation formed. (h) Explain why the height of precipitate of barium
Nyatakan warna mendakan yang terbentuk. chromate (VI) remains constant from test tubes E to H.
[3 marks / 3 markah] Terangkan kenapa ketinggian mendakan barium kromat (VI) malar
dari tabung uji E sampai H.
(d) Write the variables for this experiment. [3 marks / 3 markah]
Tuliskan pemboleh ubah bagi eksperimen ini.
(i) Manipulated variable (i) Calculate the number of moles of chromate (VI) ions
Pemboleh ubah dimanipulasikan that reacted with 1 mole of barium ions.
(ii) Responding variable Hitung bilangan mol ion kromat (VI) yang bertindak balas dengan 1
Pemboleh ubah bergerak balas mol ion barium.
(iii) Controlled variable [3 marks / 3 markah]
Pemboleh ubah yang dimalarkan
[3 marks / 3 markah] (j) Construct a balanced ionic equation for the formation of
barium chromate (VI).
(e) Record the height of the precipitate in Diagram 1.2. Binakan satu persamaan ion yang seimbang bagi pembentukan
Catatkan ketinggian mendakan dalam Rajah 1.2. barium kromat (VI).
[3 marks / 3 markah] [3 marks / 3 markah]
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