p Ka of CH 3 COOH =4.74, P ka of ClCH 2 COOH =2.88 Thus, difference in pH of 0.01 M solution of CH 3 COOH and ClCH 2 COOH solution, is

Question

p Ka of CH 3 COOH =4.74, P ka of ClCH 2 COOH =2.88 Thus, difference in pH of 0.01 M solution of CH 3 COOH and ClCH 2 COOH solution, is (A) 0.93 (B) 1.86 (C) 3.72 (D) 4.00

Tardigrade Admin · Accepted Answer

CH 3 COOH + H 2 O leftharpoons CH 3 COO -+ H 3 O + ClCH 2 COOH + H 2 O leftharpoons ClCH 2 COO -+ H 3 O + Both are weak acid but ( ClCH 2 COOH ) is stronger than CH 3 COOH pH =(1/2)[p Ka- log C] pH =(p Ka/2)-( log C/2) pH ( CH 3 COOH )=(4.74/2)-( log 0.01/2) pH ( ClCH 2 COOH )=(2.88/2)-( log 0.01/2) ∴ Difference in pH 2.37-1.44=0.93

Q. pKa​ of CH3​COOH=4.74,Pka​ of ClCH2​COOH=2.88 Thus, difference in pH of 0.01M solution of CH3​COOH and ClCH2​COOH solution, is

0.93

1.86

3.72

4.00

Q. $p K_{a}$ of $C H_{3} COO H = 4.74, P k_{a}$ of $ClC H_{2} COO H = 2.88$ Thus, difference in $p H$ of $0.01 M$ solution of $C H_{3} COO H$ and $ClC H_{2} COO H$ solution, is