A basic buffer solution can be prepared by mixing:
Correct answer: B. Weak base and its salt with strong acid.
- A. Strong acid and its salt with weak base.
- B. Weak base and its salt with strong acid.
- C. Strong base and its salt with weak acid.
- D. Weak acid and its salt with strong base.
Explanation
NH4OH is weak base and NH4Cl is salt of strong acid (HCI). It is an example of basic buffer.
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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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