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 Chemical Kinetics
More from
Which of the following factors does NOT affect the rate of a chemical reaction?
Which of the following statements about the rate of reaction are correct?
Match Column-I with Column-II. Column-I Column-II (a) Rate Law (i) k [A] x [B] y (b) Differential Rate Equation (ii) Reaction order (c)...