MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

Given concentration of the weak monobasic acid, C = 0.25 M. Degree of dissociation, = 0.04\% = 0.04 100 = 4 10^ -4 . For a weak monobasic acid, the hydrogen ion concentration is given by: [H^+] = C Substituting the values: [H^+] = 0.25 4 10^ -4 = 10^ -4 M. The pH of the solution is: pH = - [H^+] pH = - (10^ -4 ) = 4. Answer: 4