CuSO4 decolourises on addition of KCN, the product is (A) [Cu(CN)4] 2− (B) Cu2+ get reduced to form [Cu(CN)4] 3− (C) Cu(CN)2 (D) CuCN

Question

grenade · Answer

(D)

Rohit · Answer

Initially [Cu(CN) 4 ] 2- is formed and later Cu 2+ reduces to Cu + Releasing cyanogen Gas Hence answer is (B)

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CuSO4 decolourises on addition of KCN, the product is (A) [Cu(CN)4] 2− (B) Cu2+ get reduced to form [Cu(CN)4] 3− (C) Cu(CN)2 (D) CuCN

CuSO4 decolourises on addition of KCN, the product is (A) [Cu(CN)4] 2− (B) Cu2+ get reduced to form [Cu(CN)4] 3− (C) Cu(CN)2 (D) CuCN

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CuSO4 decolourises on addition of KCN, the product is (A) [Cu(CN)4] 2− (B) Cu2+ get reduced to form [Cu(CN)4] 3− (C) Cu(CN)2 (D) CuCN

CuSO4 decolourises on addition of KCN, the product is (A) [Cu(CN)4] 2− (B) Cu2+ get reduced to form [Cu(CN)4] 3− (C) Cu(CN)2 (D) CuCN

2 Answers

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