Concentration dependence of rate is called differential rate equation. Integrated differential equations give relation between directly measured experimental data i.e., concentration at different times and rate constant. The integrated rate equations are different for the reactions of differennt reaction orders. the first-order reaction has a rate constant `1.15xx10^(-3)s^(-1)`.
Q. For a reaction,
`A+H_(2)O to B`
Rate`prop[A]`
The order of the reaction is:

Options

A. Zero order
B. Fractional order
C. Pseudo first order
D. Second order

Answer

C

Explanation

Slope=`A+H_(2)O to B`
`rprop[A]" "(because[H_(2)O]="excess")`
It is called pseudo first order reaction.