Question:

In the following reaction NaOH + S \(\rightarrow\) A + Na\(_2\)S + H\(_2\)O; A is

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Sulfur disproportionates in hot alkali.
Updated On: Apr 7, 2026
  • Na\(_2\)SO\(_4\)
  • Na\(_2\)SO\(_3\)
  • Na\(_2\)S
  • Na\(_2\)S\(_2\)O\(_3\)
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The Correct Option is B

Solution and Explanation

Step 1: Understanding the Concept:
Sulfur reacts with hot NaOH.
Step 2: Detailed Explanation:
6NaOH + 3S \(\rightarrow\) 2Na\(_2\)S + Na\(_2\)SO\(_3\) + 3H\(_2\)O
Step 3: Final Answer:
A is Na\(_2\)SO\(_3\).
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