The half-life of a first-order reaction is independent of which of the following? (2022)
Practice Questions
1 question
Q1
The half-life of a first-order reaction is independent of which of the following? (2022)
Initial concentration
Rate constant
Temperature
All of the above
The half-life of a first-order reaction is independent of the initial concentration.
Questions & Step-by-step Solutions
1 item
Q
Q: The half-life of a first-order reaction is independent of which of the following? (2022)
Solution: The half-life of a first-order reaction is independent of the initial concentration.
Steps: 5
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. The half-life is the time it takes for half of the reactant to be used up in the reaction.
Step 3: Recognize that for first-order reactions, the half-life is a constant value. It does not change based on how much reactant you start with.
Step 4: Identify that the half-life formula for a first-order reaction is: t1/2 = 0.693/k, where k is the rate constant.
Step 5: Conclude that since the half-life depends only on the rate constant (k) and not on the initial concentration, it is independent of the initial concentration.
