JEE Main Chemistry · Solutions

pH of Weak Acids and Bases

pH of Weak Acids and Bases (Solutions) was asked 2 times in 2 JEE Main shifts, 2022–2026, out of the 42 shifts Lumi analysed. 1 of the 2 had a numerical answer.

Times asked: 2; in 2 shifts
Years: 2022–2026
Usual format: Numerical value; Calculation
Pattern: Occasional; repeats across shifts

How it is asked

Expression for degree of dissociation
Ph of weak acid from ka

Difficulty

Easy 1Medium 0Hard 1

Where it sits

Chapter: Solutions. Topic: pH and Buffers, 17 questions over 13 ideas.

All 2 questions

Newest first, each with its options and official answer.

6 Apr 2026, Shift 2 · Q56Given is a concentrated solution of a weak electrolyte $\mathrm{A_xB_y}$ of concentration 'c' and dissociation constant 'K'. The degree of…HardSingle correct
28 Jul 2022, Shift 1 · Q85 $K_a$ for butyric acid ( $\mathrm{C_3H_7COOH}$ ) is $2\times10^{-5}$ . The pH of 0.2 M solution of butyric acid is __________…EasyNumerical value