Given information
The tabulated data given in question shows concentration of versus time for the reaction.
Step-by-step explanation
1) To find order of reaction , make a table calculate both and , where represents concentration of reactants .
2) After calculating subtract each successive number from preceding number .
3) After finding these values look for which value whether concentration , or have nearby values. Nearby values shows a linear graph and thus that will be the order of reaction .
4 ) if it is then reaction will be of second order , it it is then reaction is of first order .
5 ) on solving the above data , values have almost nearby numbers , and hence show a linear graph , thus the reaction is of first order reaction .
6 ) order of reaction can also be evaluated by plotting a graph and the values which gives the most linear graph will define the order of reaction.
The graph can be shown as:
So, the above data follows first order reaction.