Question
What is the molarity of H _2 SO _4 solution having pH = 4 ?
MHT CET
Chemistry
Ionic Equilibrium
2026
MHT CET 2026 (18 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. 4 10^ -1 \ M
- B. 4 10^ -2 \ M
- C. 5 10^ -5 \ M
- D. 1 10^ -4 \ M
Answer
C. 5 10^ -5 \ M
Step-by-step solution
Given pH = 4 [ H ^+] = 10^ -4 \ M H _2 SO _4 is a strong diprotic acid and dissociates completely in dilute solutions: H _2 SO _4 2 H ^+ + SO _4^ 2- Therefore, [ H ^+] = 2 [ H _2 SO _4] [ H _2 SO _4] = [ H ^+] 2 = 10^ -4 2 = 5 10^ -5 \ M Answer: 5 10^ -5 \ M
Related: Chemistry — Ionic Equilibrium · All PYQ Banks