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AntaAcids

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AntaAcids

  1. 1. Chemistry Project AISSCE 2015-16 Aamir Lodi Roll Number: ANTACIDS
  2. 2. CERTIFICATE This is to certify that the Project / Dissertation entitled CYCLOTRON is a bonafide work done by Master Aamir Lodi of class XII Session 2015- 16 in partial fulfillment of CBSE’s AISSCE Examination 2016 and has been carried out under my direct supervision and guidance. This report or a similar report on the topic has not been submitted for any other examination and does not form a part of any other course undergone by the candidate. ………………………… ………………………………. ………………………… Signature of Student Signature of Principle Signature of Teacher/Guide
  3. 3. ACKNOWLEDGEMENT  I undertook this Project work, as the part of my XII- Physics project. I had tried to apply my best of knowledge and experience, gained during the study and class work experience.  I would like to extend my sincere thanks and gratitude to my teacherMrs ______________ and Mr _____________ I am very much thankful to our Principal Mr. Chopra for giving valuable time and moral support to develop this software.  I would like to take the opportunity to extend my sincere thanks and gratitude to our parents for being a source of inspiration and providing time and freedom to develop this project.
  4. 4. Aayush Gupta
  5. 5. AIM OF PROJECT:  To analyze the given sample of commercial antacids by determining the amount of HCl acid they can neutralize. REQUIREMENTS  Burette  Pipette  Titration flask  Measuring flask  Beaker  Weight box  Fractional weight  Sodium hydroxide  Sodium carbonate  HCl  Phenolphthalein / Methyl Orange
  6. 6. PROCEDURE  Prepare 1 litre of HCl solution by diluting 10mL of concentrated acid for 1 litre.  Similarly, make 1L of NaOH by dissolving 4g of NaOH to 1L solution.  Prepare Na2CO3 solution by weighing exactly 1.325g of anhydrous Na2CO3 and then dissolve in water to prepare exactly 0.25L of solution.  Standardize the HCl solution by titrating it against Na2CO3 solution using methyl orange as indicator.  Similarly, standardize the NaOH solution by titrating it against standard HCl solution using phenolphthalein as indicator.  Powder the various samples of antacid tablets and weigh 1g each.  Add a specific volume of standardized solution of HCl to each of the weighing sample taken in a conical flask. The acid should be in slight excess, so that it can neutralize all the alkaline components of the tablet.  Add 2 drops of phenolphthalein and warm the flask till most of the powder dissolves.  Titrate the solution against the standardized NaOH solution, till a permanent pinkish tinge is obtained. Repeat the experiment with different antacids
  7. 7. Standardization of HCl solution Volume of base (N/10) = ml Sr No Burette reading (initial) ml Burette reading (final) ml Volume of acid used (ml) 1 0 2 0 3 0 OBSERVATIONS Concordant reading = ml Applying normality equation, N1V1 (Acid) = N2V2 (Base) N1 x = (1/10) x Normality of HCl, N1 =
  8. 8. Standardization of NaOH solution Volume of base (N/10) = ml Sr No Burette reading (initial) ml Burette reading (final) ml Volume of acid used (ml) 1 0 2 0 3 0 OBSERVATIONS Concordant reading = ml Applying normality equation, N1V1 (Acid) = N2V2 (Base) N1 x = (1/10) x Normality of NaOH, N1 =
  9. 9. Sr No Antacid Volume of NaOH used for neutralizing unused HCl Vol. of HCl used for neutralizing 1 g of antacid 1 ENO 2 Digene 3 Gelusil ANALYSIS OF ANTACID TABLETS
  10. 10. RESULT  Volume of acid used for neutralization of ENO –  Volume of acid used for neutralization of Digene –  Volume of acid used for neutralization of Gelusil – CONCLUSION  The antacid for which maximum amount of HCl is used for neutralization is . It is most effective. PRECAUTIONS  Rinse the pipette and burette with the solutions which are to be filled.  There should be no air bubble in the nozzle of the pipette.  Anti parallax card should be used.  Rubber pinch cork burette should not be used  Two concordant readings must be taken.  Lower miniscus of the burette should be read.
  11. 11. Bibliography The Following books were used in the completion of this project:  Chemistry Laboratory Manual  Simplified ICSE chemistry Also, the following websites were consulted for relevant materials:  Icbse.org  Google.com  http://en.wikipedia.org/wiki/Antacids

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