Water of reaction needed to react completely with 100 g of calcium sulphate hemihydrates to convert it to calcium sulphate dihydrate______________?
Correct answer: A. 18.6ml
- A. 18.6ml
- B. 22.2ml
- C. 30.4ml
- D. 45.3ml
Explanation
Converting hemihydrate to dihydrate requires 1.5 moles of water for each mole of calcium sulphate hemihydrate. This equals approximately 18.6 mL of water for 100 g of hemihydrate.
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