The half-life of a first-order reaction is independent of the initial concentrat

The half-life of a first-order reaction is independent of the initial concentration of the reactant. What is the expression for the half-life? (2022)

The half-life of a first-order reaction is independent of the initial concentration of the reactant. What is the expression for the half-life? (2022)

Step 1: Understand what half-life means. Half-life is the time it takes for half of a reactant to be used up in a reaction.
Step 2: Know that we are talking about a first-order reaction. This means the rate of the reaction depends on the concentration of one reactant.
Step 3: Remember that for first-order reactions, the half-life does not change with different starting amounts of the reactant.
Step 4: Learn the formula for the half-life of a first-order reaction, which is t₁/₂ = 0.693/k.
Step 5: In this formula, 't₁/₂' is the half-life, '0.693' is a constant, and 'k' is the rate constant of the reaction.

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