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JEE Main Chemistry question

ChemistryEquilibriumJEE Main

The resultant pH of a solution on mixing 200 mL of an aqueous solution of HCl (pH=2.0) with 300 mL of an aqueous solution of NaOH (pH=12.0) is:

Answer: (A)

Solution

mmol H⁺=2, mmol OH⁻=3; excess OH⁻=1 mmol in 500 mL → 2×10⁻³ M; pOH=2.699; pH=11.301.

Question ID VK-136349