Arrange the following resultant mixtures in increasing order of their pH values A. 10 mL 0.2 M Ca(OH)₂ + 25 mL 0.1 M HCl B. 10 mL 0.01 M H₂ SO₄ + 10 mL 0.01 M Ca(OH)₂ C. 10 mL 0.1 M H₂ SO₄ + 10 mL 0.1 M KOH Choose the correct answer from the options given below:

Step-by-step solution

For mixture A: Millimoles of OH ⁻ = 10 0.2 2 = 4 Millimoles of H ⁺ = 25 0.1 1 = 2.5 Remaining OH ⁻ = 4 - 2.5 = 1.5 mmol The solution is basic, so pH > 7 . For mixture B: Millimoles of H ⁺ = 10 0.01 2 = 0.2 Millimoles of OH ⁻ = 10 0.01 2 = 0.2 The solution is completely neutralized, so pH = 7 . For mixture C: Millimoles of H ⁺ = 10 0.1 2 = 2 Millimoles of OH ⁻ = 10 0.1 1 = 1 Remaining H ⁺ = 2 - 1 = 1 mmol The solution is acidic, so pH Therefore, the increasing order of pH values is C Answer: C < B < A