Question

When sodium sulfide reacts with dilute $H_{2}S{O}_4$, ____________ is released.

• A. $H_{2}S$
• B. $C{O}_2$
• C. $H_{2}O$
• D. $H_2$

Answer 1

The correct option is A $H_{2}S$

When $N{a}_{2}S$ is treated with dilute $H_{2}S{O}_4{H}_{2}S$ gas is released which is identified due to its rotten egg odour. It turns blue litmus paper red and lead acetate paper black.
$N{a}_{2}S+H_{2}S{O}_4\to N{a}_{2}S{O}_4+H_{2}S$