At 300K rate constant for A $\to$product at t = 50 min is 0.02 s^-1, then rate constant at
t = 75 min & 310 k will be ( in s^-1)

At t=50sec , 300K ; K = 0.02 sec^-1

t= 75sec , 310K ; K =?

 With time rate constant does not change but rate constant change with temperature

K increases 2$\uparrow$times with raise 10⁰C

300K $\Rightarrow \mathrm{K} =0.02 {\sec }^{-1}$

310 K $\Rightarrow \mathrm{K} =2\times 0.02 {\sec }^{-1}$=0.04 sec^-1