Reaction of an inorganic sulphite X with dilute H2SO4 generated compound Y. Reaction of Y with NaOH gives X. Further,…
p-Block Elements (Class 12) · Class 12 · JEE Main Previous Year Question
Reaction of an inorganic sulphite X with dilute generated compound Y. Reaction of Y with NaOH gives X. Further, the reaction of X with Y and water affords compound Z. Y and X, respectively, are:
- a
and
- b
and
- c✓
and
- d
S and
and
Strategy: Analyze the cycle of reactions between sulphites, bisulphites, and sulphur dioxide.
Step 1: Identification of Y Inorganic sulphites (like ) react with dilute acids to generate Sulphur dioxide: Thus, Y is .
Step 2: Identification of X Reaction of with Sodium hydroxide forms sodium bisulphite or sodium sulphite: Further reaction of bisulphite with yields sulphite. And reaction of sulphite with and water affords bisulphite . Matching the sequence in the question, Y is and X is .
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