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Question

The aqueous solution of sodium cyanide is basic in nature. This is due to the hydrolysis of:

A
sodium ions
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B
cyanide ions
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C
cyanide ions and sodium ions
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D
isocyanide ions
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Solution

The correct option is D cyanide ions
The aqueous solution of sodium cyanide is basic in nature. This is due to the hydrolysis of cyanide ions.

The dissociation reaction of NaCN in water is given below:
NaCNNa++CN

The generated cyanide ions undergo hydrolysis as follows:
CN+H2OHCN+OH

Therefore, the solution turns basic due to the generation of OH ions produced by the hydrolysis of cyanide ions.

Option B is correct.

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