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The pH of a solution formed by mixing equal volumes of two solutions A and B of a strong acid having pH 6 and pH 4 respectively is (given log 5 is 0.6
Question

The pH of a solution formed by mixing equal volumes of two solutions A and B of a strong acid having pH 6 and pH 4 respectively is (given log 5 is 0.699)

A.

greater than 6

B.

less than 4

C.

between 4 and 5

D.

between 5 and 6

Correct option is C

For strong acids:
pH = –log(5.05 × 10⁻⁵) ≈ 4.3 So, pH lies between 4 and 5.

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