Question

For a first order reaction $(A) \rightarrow products$ the concentration of A changes from 0.1 M to 0.025 M in 40 minutes. The rate of reaction when the concentration of A is 0.01 M is :
(a) 1.73 × 10⁻⁵ M/min
(b) 3.47 × 10⁻⁴ M/min
(c) 3.47 × 10⁻⁵ M/min
(d) 1.73 × 10⁻⁴ M/min

Answer 1

I think option b is correct

Answer 2

Hey dude option b is correct