Question

In a particular experiment, it was found that the concentration of N2O5 in liquid bromine 

varied with time as follows

t/s 0 200 400 600 1000

[N2O5]/mol dm-3

0.110 0.073 0.048 0.032 0.014

Confirm that the reaction is first-order in N2O5 and determine the rate constant.

Answer 1

The reaction is a first order since graph is a straight line

Rate of constant $K= 2.1×10^{-3}s^{-1}$