Question:
The sol formed in the following unbalanced equation is:
\[
\text{As}_2\text{O}_3 + \text{H}_2\text{S} \rightarrow ?
\]
The sol formed in the following unbalanced equation is:
\[
\text{As}_2\text{O}_3 + \text{H}_2\text{S} \rightarrow ?
\]
Show Hint
Metal oxides like \( \text{As}_2\text{O}_3 \) form colloidal sulfides with \( \text{H}_2\text{S} \) gas.
Updated On: May 17, 2025
- \( \text{As}_2\text{S}_2 \)
- \( \text{As}_2\text{S}_3 \)
- As
- S
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The Correct Option is B
Solution and Explanation
Arsenic trioxide reacts with hydrogen sulfide to form arsenic trisulfide \( \text{As}_2\text{S}_3 \), which is a colloidal sol:
\[ \begin{align} \text{As}_2\text{O}_3 + 3\text{H}_2\text{S} \rightarrow \text{As}_2\text{S}_3 + 3\text{H}_2\text{O} \] Arsenic trisulfide appears as a yellow precipitate and forms a sol in water.
\[ \begin{align} \text{As}_2\text{O}_3 + 3\text{H}_2\text{S} \rightarrow \text{As}_2\text{S}_3 + 3\text{H}_2\text{O} \] Arsenic trisulfide appears as a yellow precipitate and forms a sol in water.
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