Question

When $H_{2}S$ gas is passed into aqueous $S{O}_2$:

• A. $H_{2}S$ is converted into a yellow precipitate of sulphur
• B. $S{O}_2$ is converted into yellow precipitate of sulphur
• C. a clear solution of $H_{2}S{O}_4$ is formed
• D. $S{O}_2$ and $H_{2}S$ are converted into yellow precipitate

Answer 1

The correct option is D $S{O}_2$ and $H_{2}S$ are converted into yellow precipitate

Sulphur dioxide reacts with hydrogen sulphide to give elemental sulphur and water. Sulphur appears as a yellow precipitate.

$2H_{2}S+S{O}_2\to 2H_{2}O+3S$