What is the pH of resulting solution when 20 mL M 10 NaOH and 10 mL M 10 H ₂ SO ₄ are mixed together ?

Step-by-step solution

Millimoles of NaOH = 20 1 10 = 2 mmol Millimoles of OH ⁻ = 2 mmol Millimoles of H ₂ SO ₄ = 10 1 10 = 1 mmol Millimoles of H ⁺ = 1 2 = 2 mmol Since the millimoles of H ⁺ and OH ⁻ are equal, complete neutralization takes place. The resulting solution contains Na ₂ SO ₄ , which is a salt of a strong acid and a strong base. Therefore, the solution is neutral and its pH is 7 . Answer: 7