The half-life of a first-order reaction is dependent on which of the following?
Practice Questions
Q1
The half-life of a first-order reaction is dependent on which of the following? (2020) 2020
Initial concentration of reactants
Rate constant
Temperature
All of the above
Questions & Step-by-Step Solutions
The half-life of a first-order reaction is dependent on which of the following? (2020) 2020
Step 1: Understand what a first-order reaction is. It is a type of chemical reaction where the rate depends on the concentration of one reactant.
Step 2: Learn about half-life. Half-life is the time it takes for half of the reactant to be used up in a reaction.
Step 3: Know that for first-order reactions, the half-life is a constant value that does not change with the initial concentration of the reactant.
Step 4: Recognize that the half-life is directly related to the rate constant (k) of the reaction. A higher rate constant means a shorter half-life.
Step 5: Conclude that the half-life of a first-order reaction is independent of the initial concentration and is directly proportional to the rate constant.
