Question

Which of the following has highest $p{K}_b$ value?

• A. $(C{H}_3{)}_{3}CN{H}_2$
• B. $N{H}_3$
• C. $(C{H}_3{)}_{2}NH$
• D. $C{H}_{3}N{H}_2$

Answer 1

Answer: (B)

Higher the basicity, lower is the $p{K}_b$ value.Since $N{H}_3$ is the weakest base, hence it has highest $p{K}_b$ value.