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(a) When a moist blue litmus paper is di...

(a) When a moist blue litmus paper is dipped in a solution of hypochlorous acid, it first turns red and then latter gets decolourised. Explain.
(b) Iodine is liberated when `KI` is added to a solution of `Cu^(2+)` ions but `Cl_(2)` is not liberated when `KCl` is added to a solution of `Cu^(2+)` ions. why?

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Asserartion:Iodine is liberated when KI is added to Cu^(2+) ions but Cl_(2) is not liberated when KCl added to Cu^(2+) ions. Reason: The reducing power of I^(-) is more than Cl^(-) .

Iodine is liberated in the reaction between KI and CU^(2+) ions but chlorine is not liberated when KCl is added to Cu^(2+) ions. Explain.

lodine is liberated in the reactions between KI and Cu^(2+) , but chlorine is not liberated when KCI is added to Cu^(2+) , why?

Iodine is liberated in the reaction between KI and Cu^(2+) , but bromine is not liberated when KBr is added to Cu^(2+) . Explain.