Chemistry · s-Block and p-Block Elements
Which of the following statements regarding the compound names, chemical formulas, and chemical properties are correct? 1. Slaked lime - Ca(OH)2 - reacts with CO2 to form a compound used in whitewashing. 2. Caustic soda - KOH - strongly hygroscopic and used in soap manufacture. 3. Bleaching powder - Ca(OCl)2 (or CaOCl2) - produces chlorine on exposure to moist air. 4. Quicklime - CaO - prepared by thermal decomposition of calcium sulfate.
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