Half-life can be found out for a reaction of?
Correct answer: C. Any order
- A. First order
- B. Second order
- C. Any order
- D. Zero order
Explanation
Option A: First order: For a reaction that follows first-order kinetics, the half-life is constant and is independent of the initial concentration of the reactant. The half-life can be calculated using the equation t(1/2) = (0.693 / k), where k is the rate constant of the reaction.Option B: Second order: For a reaction that follows second-order kinetics, the half-life is dependent on the initial concentration of the reactant. The half-life can be calculated using the equation t(1/2) = (1 / (k * [A]₀)), where [A]₀ is the initial concentration of the reactant and k is the rate constant of the reaction.Option C: The half-life can be determined for reactions of any order, but the specific method of calculation will depend on the order of the reaction.Option D: Zero order: For a reaction that follows zero-order kinetics, the half-life can be calculated using the equation t(1/2) = ([A]₀ / (2 * k)), where [A]₀ is the initial concentration of the reactant and k is the rate constant of the reaction.
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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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