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An inorganic compound 'A' gives a brick ...

An inorganic compound 'A' gives a brick red flame on performing flame test. The compound gives the following tests also.
(a) It smells of chlorine when placed in moist air.
(b) If `KI` and `CH_(3)COOH` are added to the suspension of the compound in water, a violet colour is noticed. Identify the compound 'A' and write the equations for the tests (a) and (b).

Text Solution

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Since the compound 'A' gives a brick red flame on performing flame test, it is a calcium compound. As it smells of chlorine in moist air, it is bleaching powder `(CaOCl_(2))`. The chemical equations for the steps (a) and (b) are follows :
(a) ` underset("Bleaching powder")(CaOCl_(2))+underset("Moist air")(H_(2)O) to Ca(OH)_(2)+Cl_(2)`
(b) `CaOCl_(2)+2CH_(3)COOH to (CH_(3)COO)_(2) Ca+H_(2)O+Cl_(2)`
`2KI+Cl_(2) to 2KCl+underset(("violet"))(I_(2)`
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