Mole To Mole Calculations
1. Chlorine is used by textile manufacturers to bleach cloth. Excess chlorine is destroyed by its reaction
with sodium thiosulfate, Na2S2O3:
Na2S2O3 (aq) + 4 Cl2 (g) + 5H2O(aq)  2NaHSO4 (aq)+ 8 HCl(aq)
a. How many moles of Na2S2O3 are needed to react with 0.12mol of Cl2?
b. How many moles of HCl can form from 0.12mol of Cl2?
c. How many moles of H2O are required for the reaction of 0.12mol of Cl2?
d. How many moles of H2O react if 0.24mol HCl is formed?
2. How many moles of carbon dioxide are produced when 10.0 moles of propane are burned in excess
oxygen in a gas grill.
3. Sulfuric acid formed when sulfur dioxide reacts with oxygen and water. Write the balanced chemical
equation for the reaction. If 12.5 mol SO2 reacts, how many mol H2SO4 can be produced? How many
mole O2 is needed?
4. A reaction between methane and sulfur produces carbon disulfide (CS2), a liquid often used in the
production of cellophane.
CH4(g) +
S8(s) 
CS2(l) +
H2S(g)
a) Calculate the mol CS2 produced when 1.50 mol S8 is used.
b) How many mole H2S is produced?
Mole To Mole Calculations
1. Chlorine is used by textile manufacturers to bleach cloth. Excess chlorine is destroyed by its reaction
with sodium thiosulfate, Na2S2O3:
Na2S2O3 (aq) + 4Cl2(g) + 5H2O(aq)  2NaHSO4 (aq)+ 8 HCl(aq)
a. How many moles of Na2S2O3 are needed to react with 0.12mol of Cl2?
b. How many moles of HCl can form from 0.12mol of Cl2?
c. How many moles of H2O are required for the reaction of 0.12mol of Cl2?
d. How many moles of H2O react if 0.24mol HCl is formed?
2. How many moles of carbon dioxide are produced when 10.0 moles of propane are burned in excess
oxygen in a gas grill.
3. Sulfuric acid formed when sulfur dioxide reacts with oxygen and water. Write the balanced chemical
equation for the reaction. If 12.5 mol SO2 reacts, how many mol H2SO4 can be produced? How many
mole O2 is needed?
4. A reaction between methane and sulfur produces carbon disulfide (CS2), a liquid often used in the
production of cellophane.
CH4(g) +
S8(s) 
CS2(l) +
H2S(g)
a) Calculate the mol CS2 produced when 1.50 mol S8 is used.
b) How many mole H2S is produced?