Question

Amount of hydrogen produced when $H_{2}S{O}_4$ that can react with 32.75 g of zinc is:

• A. 2 g
• B. 4 g
• C. 1 g
• D. 0.5 g

Answer 1

Answer: (C)

1 g

Reaction of zinc with sulphuric acid is follows:

$Zn+H_{2}S{O}_4\to ZnS{O}_4+H_2$

1 mole of zinc produces 1 mole of hydrogen gas.

Moles of zinc given $=\frac{32.75}{65.5}=0.5$

So, the amount of hydrogen produced is 0.5 mole $=0.5\times 2=1$ gram.

Hence, option C is correct.