For the decomposition of A, students plot ln[A] vs t and 1/[A] vs t. Only the ln[A] plot gives a straight line.
What is the order of the reaction in A and the value of k?
- Acheck_circle
First order, k = 0.025 s⁻¹
- B
First order, k = -0.025 s⁻¹
- C
Zero order, k = 0.025 M/s
- D
Second order, k = 0.025 M⁻¹s⁻¹
Explanation
Linearity of ln[A] vs t indicates first order. The slope = -k, so k = 0.025 s⁻¹.