I saw this question in my book. Some data about a reaction is given and basically I have to demonstrate that the reaction is indeed first order, in order to "justify"the given data.
In the solution given, the integrated rate law for a first order reaction has been used to find the rate constant for different time intervals and it is stated that since the value comes out to be largely constant, the reaction is first order.
Is this enough proof? And am I correct in assuming that this approach was followed because had the values been placed in the integrated rate law for any other order, the values of the rate constant would not have the constancy as shown?
Or is there a better, more concrete approach towards questions of this type?