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JEE Main · 2023 · 10 Apr 2023 · Shift 2 · s-Block Elements

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Number of water molecules in washing soda and soda ash respectively are:
  1. (A)10 and 1
  2. (B)1 and 10
  3. (C)1 and 0
  4. (D)10 and 0✓ Correct

Answer: (D)

Solution

Washing soda is sodium carbonate decahydrate (), containing 10 water molecules. Soda ash is anhydrous sodium carbonate (), containing 0 water molecules. Therefore, the answer is 10 and 0 respectively.

JEE Main · 2023 · 10 Apr 2023 · Shift 2 · Single correct option

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