26 - Carbon reacts with sulfur dioxide- SO- to form carbon disalfide-.docx

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26 . Carbon reacts with sulfur dioxide, SO, to form carbon disalfide, CS, and carbon The balanced equation for the reaction is: (a) How many grams of carbon disulide, CS, will form if 0450 mol of carbon ia consumed? mass of CS2 (b) If 10.0 g of carbon are consumed, how many mole of carbon dioxide, CO2, will form? mole of CO, S. Iron(II) oxide, Fe,0,, reacts with hydrogen gas, H2, at elevated temperatures to produce iron metal and water. The unbalanced equation is: (a) What mass of hydrogen gas, H, must be consumed to produce 10.0 g of iron metal? mass of H2_ b) What mas of ironi(ll) oxide, Fe,0, must be consumod to prepare 2.50 g of fron metal? mass of Fe203- Solution 4. 3 C(s) + 2 SO 2 = CS 2 (l) + 2 CO 2 (g) a) Acording to above balanced reaction, 3 mol C produces 1 mol CS2 and 2 mol CO 2 , when reacted with 2 mol SO 2 . Therefore, moles of CS2 produed by 0.450 mol C is- moles of CS 2 = (1 mol CS 2 /3 mol C)*0.450 mol C = 0.150 mol CS 2 . Molar mass of CS 2 = 76.139 g/mol Amount of CS 2 produced in grams= 0.150 mol * 76.139 g/mol = 11.421 g -------------------------------------------------- (b) Amount of carbon reacted = 10.0 g Molar mass of carbon = 12 g/mol Moles of carbon = 10.0 g/12.0 g/mol = 0.833 mol Now according to reaction, 3 mol C produces 1 mol CS 2 and 2 mol CO 2 , when reacted with 2 mol SO 2 . So, Moles of CO 2 produced by 0.833 mol of C = (2 mol CO 2 / 3 mol C)*0.833 mol of C = 0.56 mol Moles of CO 2 = 0.56 mol .

Educação

Moles of carbon = 10.0 g/12.0 g/mol = 0.833 mol
Now according to reaction,
3 mol C produces 1 mol CS 2 and 2 mol CO 2 , when reacted with 2 mol SO 2 .
So,
Moles of CO 2 produced by 0.833 mol of C = (2 mol CO 2 / 3 mol C)*0.833 mol of C = 0.56 mol
Moles of CO 2 = 0.56 mol

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