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NEET
Exam
NEET
Subject
Chemistry
Chapter
s Block Elements

NEET · Chemistry · s Block Elements

What happens to gypsum (CaSO 4 ·2H 2 O) when it is heated to 393 K?

What happens to gypsum (CaSO4·2H2O) when it is heated to 393 K?

Options

  1. AIt melts
  2. BIt decomposes to form anhydrous calcium sulfate
  3. CIt forms calcium sulfate dihydrate
  4. DIt remains unchanged

Correct answer

B. It decomposes to form anhydrous calcium sulfate

Step-by-step solution

When gypsum is heated to 393 K, it loses water of crystallization and forms anhydrous calcium sulfate (CaSO4).
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