In a zero-order reaction, the rate is independent of:
Correct answer: B. The concentration of reactants
- A. The temperature of the reaction
- B. The concentration of reactants
- C. The concentration of products
- D. The presence of a catalyst
Explanation
In a zero-order reaction, the rate of reaction is independent of the concentration of reactants. This means that even if the concentration of reactants changes, the rate remains constant. This is distinct from other reaction orders, where the rate depends on the concentration of one or more reactants. Temperature affects the rate of reaction as it influences kinetic energy and collision frequency. Catalysts accelerate the reaction rate by providing a lower-energy pathway, and product concentration can shift equilibrium but does not directly affect the rate of a zero-order reaction.
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About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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