11 grade chemistry others
What is the chemical formula of Gypsum?(A) CaSO_4.5H_2O(B) CaSO_4.7H_2O(C) CaSO_4.2H_2O(D) CaSO_4.9H_2O
What is the chemical formula of Gypsum?(A) CaSO_4.5H_2O(B) CaSO_4.7H_2O(C) CaSO_4.2H_2O(D) CaSO_4.9H_2O
1 Answer
Askiitians Tutor Team
The chemical formula for gypsum is \( \text{CaSO}_4 \cdot 2\text{H}_2\text{O} \).
Gypsum is a mineral composed of calcium sulfate dihydrate. The term "dihydrate" means that each formula unit of calcium sulfate (\(\text{CaSO}_4\)) is associated with two molecules of water (\(2\text{H}_2\text{O}\)). Therefore, the correct answer is:
**(C) \(\text{CaSO}_4 \cdot 2\text{H}_2\text{O}\)**.
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