Question: how many moles of hydrochloric acid will be produced?
Answer: From the balanced equation H2 + Cl2® 2HCl, one mole of hydrogen will react with one mole of chlorine, so hydrogen is in excess. (2.) There are two moles HCl formed for each mole of Cl2, hence 2 x 0.141 = 0.282 moles HCl is produced. = 0.282 x (1.008 + 35.45) = 10.3 g.