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MHT CET Medical202623 April 2026Morning ShiftChemistryIonic EquilibriumActual

The pH of HCl and H ₂ SO ₄ is same at same temperature. What is the ratio of molar concentration of HCl to H ₂ SO ₄ ?

Options

  1. A1:1
  2. B1:2
  3. C2:1
  4. D1:4

Correct answer

C. 2:1

Step-by-step solution

Let the molar concentration of HCl be C₁ and H ₂ SO ₄ be C₂ . Since HCl is a strong monoprotic acid, the concentration of hydrogen ions is [ H ^+] = C₁ . Since H ₂ SO ₄ is a strong diprotic acid, assuming complete dissociation, the concentration of hydrogen ions is [ H ^+] = 2C₂ . Given that the pH of both solutions is the same, their [ H ^+] must be equal. C₁ = 2C₂ C₁ C₂ = 2 1 The ratio of molar concentration of HCl to H ₂ SO ₄ is 2:1 . Answer: 2:1

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