Subject: Physical Chemistry · Chapter: Ionic Equilibrium · Topic: Ionic Equilibrium – General · Exam: JAM 2001-2022 · Marks: 2 · Difficulty: Medium
The $\mathrm{pK}_{\mathrm{a}}$ values of $\mathrm{H}_{3} \mathrm{PO}_{4}$ are 2.12, 7.21 and 12.67. The pH of a phosphate buffer containing $0.2 \mathrm{M} \mathrm{NaH}_{2} \mathrm{PO}_{4}$ and $0.1 \mathrm{M} \mathrm{Na}_{2} \mathrm{HPO}_{4}$ is ____
Answer
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