Which of the following is (are) correct for buffer solution ?
Chemistry · JEE Advanced · NTA Exams — Equilibrium
Which of the following is (are) correct for buffer solution ?
- Acidic buffer will be effective within in the pH range \(\left(\mathrm{pK}_{\mathrm{a}} \pm 1\right)\)
- Basic buffer will be effective within the pH range \(\left(\mathrm{pK}_{\mathrm{w}}-\mathrm{pK}_{\mathrm{b}} \pm 1\right)\)
- H3PO4 + NaH2PO4 is not a buffer solution
- Buffer behaves most effectively when the [Salt]/[Acid] ratio equal to one
Answer
(A) Acidic buffer will be effective within in the pH range ( pK _ a 1 ), (B) Basic buffer will be effective within the pH range ( pK _ w - pK _ b 1 ), (D) Buffer behaves most effectively when the [Salt]/[Acid] ratio equal to one
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