How dissolving of quick lime in water is chemical change?
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It isn’t. When CaCO3 is thermally decomposed to CaO and CO2, the CaO is known as quicklime.
Quicklime reacts in an exothermic reaction to make Ca(OH)2, often called slaked lime. This is sparingly soluble in water, and if filtered the clear filtrate is known as limewater, the usual lab reagent to test for CO2.
So adding slaked lime to water is merely dissolving.
Quicklime reacts in an exothermic reaction to make Ca(OH)2, often called slaked lime. This is sparingly soluble in water, and if filtered the clear filtrate is known as limewater, the usual lab reagent to test for CO2.
So adding slaked lime to water is merely dissolving.
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Answer:
coz when quick lime is dissolved in water it forms soaked lime releasing a large amount of heat so it is chemical and exothermic change
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