The rate of reaction:
Correct answer: B. Decreases as the reaction proceeds
- A. Increases as the reaction proceeds
- B. Decreases as the reaction proceeds
- C. Remains unchanged
- D. None of these
Explanation
The correct answer is that the rate of reaction decreases as the reaction proceeds. This is due to the reduction in reactant concentrations as they are converted into products. Since reaction rate is dependent on the concentration of reactants, a decrease in these concentrations leads to a decrease in the rate. Option A is incorrect because it suggests the rate increases, which contradicts the typical behavior of reactions. Option C is incorrect because it suggests the rate remains unchanged, which is not the case as the reaction typically slows down. Option D is incorrect as Option B provides the correct description.
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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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