The volume of hydrogen gas at 38.0°C and 763 torr that can be produced by the reaction of 4.33 g of zinc with excess sulfuric acid is __________ L.

Question

Quizplus · Accepted Answer

The balanced chemical equation is:Zn + H2SO4 → ZnSO4 + H2Moles of Zn = 4.33 g / 65.38 g/mol = 0.0663 molAccording to the balanced chemical equation, 1 mol of Zn produces 1 mol of H2.Therefore, 0.0663 mol of Zn will produce 0.0663 mol of H2.Volume of H2 at 38.0°C and 763 torr = (0.0663 mol) * (0.0821 L*atm/(mol*K)) * (38.0 + 273.15) K / (763 torr / 760 torr) = 1.68 L

The Volume of Hydrogen Gas at 38