MHT CET202618 April 2026Morning ShiftChemistryIonic EquilibriumActual
What is the molarity of H ₂ SO ₄ solution having pH = 4 ?
Options
- A4 10⁻¹ M
- B4 10⁻² M
- C5 10⁻⁵ M
- D1 10⁻⁴ M
Correct 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 ₄²⁻ 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