Lime reacts exothermally with water to give ‘A’ which has low solubility in water. Aqueous solution of ‘A’ is often used for the test of CO2, a test in which insoluble B is formed. If B is further rea

Question

Lime reacts exothermally with water to give ‘A’ which has low solubility in water. Aqueous solution of ‘A’ is often used for the test of CO2, a test in which insoluble B is formed. If B is further reacted with CO2 then soluble compound is formed. ‘A’ is

(A) White lime
(B) Quick lime
(C) Lime water
(D) Slaked lime

Prashant Kotian · Accepted Answer

Correct answer: D. CaO    O H Ca(OH)2(A) Ca(OH)2aq + CO2 CaCO3(B) + H2O CaCO3 + H2O + CO2  Ca(HCO3)2aq

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