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The weak acids undergo partial ionisatio...

The weak acids undergo partial ionisation is aqueous medium. However the dissociation of weak acids is suppressed by presence of common ions. But the Ka value of the acid remains constant irrespective of extent of dissociation
What is `[CN^(-)]` J in a solution prepared by mixing 100ml 0.1M KCN and 100 ml 0.1 M HCl ? `(K_(a) of HCN= 5xx 10^(-6) ) `

A

`5 xx 10^(-4)` M

B

`2 xx 10^(-6)` M

C

`2 xx 10^(-5)` M

D

`4 xx 10^(-6)` M

Text Solution

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The correct Answer is:
A
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