Which of the following is not a buffer solution?
Correct answer: C. HCl + NaCl
- A. CH3COOH + CH3COONa
- B. H2CO3 + NaHCO3
- C. HCl + NaCl
- D. H3PO4 + Na2HPO4
Explanation
An acidic buffer solution is prepared by mixing weak acid and salt of it with a strong base. So HCl + NaCl cannot form an acidic buffer solution because HCl is a strong acid and it does not fulfil the condition of an acidic buffer solution.
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About Buffer Solutions
Buffer solutions resist changes in pH when small amounts of acid or base are added, using a weak acid and its conjugate base or a weak base and its conjugate acid. Work includes buffer action, the common-ion effect, Henderson-Hasselbalch calculations, buffer capacity, and the difference between acidic and basic buffers.
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