Half-life period for a first order reaction is independent of
Correct answer: B. Initial concentration of the compound
- A. Conditions of temperature
- B. Initial concentration of the compound
- C. Presence of catalyst
- D. All of these
Explanation
For a first-order reaction, the half-life is a constant that is determined by the rate constant and does not depend on the initial concentration of the reactant. This is a unique property of first-order reactions. While temperature can influence the rate constant and a catalyst can provide an alternative reaction pathway, neither directly changes the half-life for a first-order reaction. This makes Option B the correct choice.
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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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