Question

Determine the order of pKa values for given acids:
(a) $CH_{3}-COOH$
(b) $O_{2}N-CH_{2}-COOH$
(c) $NC-CH_{2}-COOH$
(d) $MeO-CH_{2}-COOH$

• A. b>a>c>d
• B. a>d>c>b
• C. a>d>b>c
• D. b>c>d>a

Answer 1

Answer: (B)

More the acidic character less would be the value of pK_a value.