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Question: Which of the following has highest \(\mathrm { pK } _ { \mathrm { b } }\) value?...

Which of the following has highest pKb\mathrm { pK } _ { \mathrm { b } } value?

A

(CH3)3CNH2\left( \mathrm { CH } _ { 3 } \right) _ { 3 } \mathrm { CNH } _ { 2 }

B

NH3\mathrm { NH } _ { 3 }

C

(CH3)2NH\left( \mathrm { CH } _ { 3 } \right) _ { 2 } \mathrm { NH }

D

CH3NH2\mathrm { CH } _ { 3 } \mathrm { NH } _ { 2 }

Answer

NH3\mathrm { NH } _ { 3 }

Explanation

Solution

: Higher the basicity, lower is the pKb\mathrm { pK } _ { \mathrm { b } } value. Since pKb\mathrm { pK } _ { \mathrm { b } } value.