**Question**

**One mole of zinc reacts with excess H _{2}SO_{4} to produce how many moles of hydrogen?**

**Answer**

1 mole of hydrogen.

**Explanation :**

Zn + H_{2}SO_{4 }→ ZnSO_{4 }+ H_{2}

One mole of zinc reacts with excess H_{2}SO_{4} to produce one mole of hydrogen.