Question

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

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

Answer 1

Answer: (D)

$S{O}_2$ as well as $H_{2}S$ are converted into a yellow precipitate of sulphur

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

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