A small amount of calcium oxide is taken in a beaker. Water is added slowly to the beaker. Which of the following observations will be noted? will it be noted? * 1 point Hissing sound and the solution becomes cold. Hissing sound and the solution becomes hot. No characteristic sound and the solution becomes cold. Hissing sound and the temperature of the solution remains as it is.
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when we add water in CaO (quick lime ) in a beaker
hissing sound and the solution become hot
will be noted
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When water is added to calcium oxide (quicklime), it will be converted to calcium hydroxide (slaked lime) with the liberation of enormous amount of heat. CaO+H2O→Ca(OH)2+heat. It is an exothermic reaction. Calcium hydroxide is an alkali
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