STANDARD Chemistry First Order Reactions MCQ Question
The half-life of the reaction X → Y, following first order kinetics, when the initial concentration of X is 0.01 mol L⁻¹ and initial rate is 0.00352 mol L⁻¹ min⁻¹ will be:
19.69 min.
1.969 min.
7.75 min.
77.5 min.
Correct Answer
Detailed Explanation
For a first order reaction, the rate constant k is calculated using the formula: k = rate/[X]. Substituting the given values, k = 0.352. The half-life t₁/₂ is calculated using the formula: t₁/₂ = 0.693/k, which gives t₁/₂ = 1.969 min.
Found an issue with this question?
Related Questions
More from
Which of the following factors does NOT affect the rate of a chemical reaction?
Assertion (A): The rate constant of a first-order reaction is independent of the initial concentration of the reactants. | Reason (R): The half-life o...
Consider a potential energy diagram where the y-axis represents potential energy and the x-axis represents the reaction coordinate. Which point on the...