According to the law of mass action, "The rate of chemical reaction" is proportional to the:
Correct answer: B. Product of the molar concentration of the reactant
- A. The Amount of product formed
- B. Product of the molar concentration of the reactant
- C. The initial concentration of reactant
- D. Catalyst
Explanation
The law of mass action states that reaction rate depends on how frequently reactant molecules collide. This frequency increases with their molar concentrations, so the rate is proportional to their product. Thus, option B correctly describes the law of mass action.
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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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