Zn weighing 65 g was added to the sulfuric acid solution. Calculate the amount of released hydrogen.

1. The interaction of zinc with sulfuric acid proceeds according to the equation:

Zn + H2SO4 = ZnSO4 + H2 ↑;

2.Calculate the chemical amount of zinc:

n (Zn) = m (Zn): M (Zn) = 65: 65 = 1 mol;

3. according to the reaction equation, the amounts of zinc reacted and hydrogen evolved are related as 1: 1, therefore:

n (H2) = n (Zn) = 1 mol.

Answer: 1 mole.