Questions
ln quantitative analysis of second group in laboratory, H2S gas is passed in acidic medium for precipitation' When Cu2+ and Cd2+ react with KCN, then for product true statement is
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a
K2Cu(CN)4 more soluble
b
K2Cd(CN)4 less stable
c
K2Cd(CN)3 more stable
d
K3Cu(CN)2 less stable
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Correct option is D
In K3[Cu(CN)2] copper is in + 1 oxidation state while in K2[Cd(CN)2] cadmium is in +2 oxidation state. The more the oxidation state of the central metal atom, the more is the stability of the complex.Similar Questions
A reagent used for identifying nickel ion is:
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