Free Common Ion Effect MCQs with Answers
4 Common Ion Effect MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
The common ion effect is the reduction in the ionisation of a weak electrolyte or the solubility of a sparingly soluble salt when a solution already contains one of its ions. Questions apply Le Chatelier's principle, equilibrium constants and solubility product expressions to predict the shift and calculate concentrations.
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4 questions
- A. the common ion effect
- B. the buffer action
- C. hydrolysis
- D. the catalytic effect
Explanation: Sodium chloride supplies extra chloride ions, and since the ionic product must not exceed Ksp the equilibrium shifts towards the…
Correct answer: the common ion effect- A. sodium acetate is a strong acid
- B. the added acetate ions shift the ionisation equilibrium back towards the un-ionised acid
- C. sodium ions react with the acid
- D. the temperature of the solution falls
Explanation: Sodium acetate is fully ionised and floods the solution with acetate, the common ion, so by Le Chatelier's principle the acid dissociates…
Correct answer: the added acetate ions shift the ionisation equilibrium back towards the un-ionised acid- A. Decreasing ionization
- B. Increasing ionization
- C. Maintaining ionization
- D. None of these options is correct
Explanation: Option A: In liquid chromatography, ion suppression describes the adverse effect on detector response due to reduced ionization efficiency…
Correct answer: Decreasing ionization- A. Removing K+ ions from the solution
- B. Removing ClO3- ions from the solution
- C. Adding KCl from outside
- D. Adding NaNO3 from outside
Explanation: Explanation:Adding KCl would increase the K+ ion concentration thus shifting the equilibrium to the left due to common ion effect, thus…
Correct answer: Adding KCl from outsideCommon Ion Effect MCQs: common questions
Are these Common Ion Effect MCQs free?
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There are 4 Common Ion Effect MCQs in the Chemistry bank, shown 20 to a page with the correct answer and an explanation on each.
Does every Common Ion Effect MCQ have an explanation?
Yes. Each Common Ion Effect question shows the correct option and a written explanation of why it is correct, so a wrong answer teaches you something rather than just being marked wrong.
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