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Given Delta("ioniz")H^(o)(HCN)=45.2 kJ m...

Given `Delta_("ioniz")H^(o)(HCN)=45.2 kJ mol^(-1)` and `Delta_("ioniz")H^(o)(CH_(3)COOH)=2.1 kJ mol^(-1)`. Which one of the following facts is ture?

A

`pK_(a(HCN)) = pK_(a(CH_(3)CO_(2)H))`

B

`pK_(a(HCN)) gt pK_(a)(CH_(3)CO_(2)H)`

C

`pK_(a(HCN)) lt pK_(a)(CH_(3)CO_(2)H)`

D

`pK_(a(HCN)) = (45.17)/2.07pK_(a(CH_(3)CO_(2)H))`

Text Solution

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The correct Answer is:
B
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