What will happen to the KClO3 when KCl is added to its solution in water?
Correct answer: B. Its solubility decreases
- A. Its solubility increases
- B. Its solubility decreases
- C. Concentration of Cl- ion decreases
- D. . Concentration of ClO3- ion increases
Explanation
When KCl is added to a solution of KClO₃, it introduces a common ion (K⁺) into the solution. Due to the common ion effect, the dissociation of KClO₃ is suppressed. As a result, the solubility of KClO₃ decreases, so the correct answer is B.
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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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