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What is the coordination entity formed when excess of aqueous KCN is added to an aqueous solution of copper sulphate? Why is it that no precipitate of copper sulphide is obtained when H2S(g) is passed through this solution?

What is the coordination entity formed when excess of aqueous KCN is added to an aqueous solution of copper sulphate? Why is it that no precipitate of copper sulphide is obtained when H2S(g) is passed through this solution?

Grade:9

4 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
9 years ago
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Anonymous
24 Points
6 years ago
The above answer is wrong. The Complex formed is K3[Cu(CN)4] and not K2[Cu(CN)4].What a stupid Faculty.It is NCERT question and was also asked in JEE 1986.
Anonymous
24 Points
6 years ago
In JEE 1996..... not in JEE 1986. However, the answer is K3[Cu(CN)4] and not K2[Cu(CN)4]. AskIITians should have better faculty than this .ATLEAST they should be able to answer NCERT quesions correctly, let alone JEE...
ramakrishnan
11 Points
6 years ago
what a stupid faculty.he didn’t even know this question.how on earth is he teaching his students atleast he must answer NCERT questions.

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