Free Chemical Equilibrium MCQs with Answers
625 Chemical Equilibrium MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
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.
Last updated
625 questions · page 32 of 32
- A. High yield
- B. No yield
- C. Moderate yield
- D. Low yield
Explanation: When the value of K, which represents the equilibrium constant, is very small, it indicates that the reaction has a low yield.
Correct answer: Low yield- A. 4.0 x 10^-4 M
- B. 2.0 x 10^-2 M
- C. 8.0 x 10^-4 M
- D. 2.0 x 10^-4 M
Explanation: The solubility product (Ksp) of a salt AB that ionizes as AB = A+ + B- is given as 4.0 x 10-4.
Correct answer: 2.0 x 10^-2 M- A. Increases with increase in temperature
- B. Decreases with increase in temperature
- C. Solubility does not change
- D. In some cases it increases while in others it decreases
Explanation: In exothermic reactions, heat energy is released when the solute dissolves in a solution.
Correct answer: Decreases with increase in temperature- A. 10-10
- B. 10-20
- C. 10-5
- D. 10-6
Explanation: The solubility product constant (Ksp) for BaSO4 at 25°C is given as 1 x 10-10.
Correct answer: 10-5- A. Solution will be saturated
- B. Precipitation will occur
- C. Solution will be super saturated
- D. No precipitation will occur
Explanation: Option D is correct. The ionic product is less than the solubility product, meaning the solution contains fewer ions than it could have at…
Correct answer: No precipitation will occur