Which of the following is not 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 Chemical Equilibrium
Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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