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1. What is heavy water? Mention one use of heavy water. 2. Explain why hydrogen peroxide is not stored in glass vessels. 3. What is calgon? What is its use? |
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Answer» 1. D2O. Used as moderator in nuclear reactors. 2. To prevent its decomposition. 3. Calgon is chemically sodium hexametaphosphate (Na6P6O18). It is used to remove Ca2+ and Mg2+ ions of hard water by converting them into soluble complexes. M2+ + Na4P6O2-18 → [Na2MP6O18]2- + 2Na+ (M = Mg,Ca) |
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