Question bank/JEE Main/Chemistry

JEE MainChemistryModeratePhysical Chemistry

What are and in a solution that
contains 0.03 M HA and 0.1 M HB. K_a for HA and HB are 3.0 × 10^-4
and 1.0 × 10^-10 respectively.

Show answer and solution
[H+]=Ka1×C=3×10−4×3×10−2=3×10−3M\left\lbrack H^{+} \right\rbrack = \sqrt{K_{a1} \times C} = \sqrt{3 \times 10^{- 4} \times 3 \times 10^{- 2}} = 3 \times 10^{- 3}M

Source: Grass-G / CH-24 Chemistry Paper 31 Dec..docx

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