## Finding order reaction using experiments

$aR \to bP, Rate = -\frac{1}{a} \frac{d[R]}{dt} = \frac{1}{b}\frac{d[P]}{dt}$

aphung1E
Posts: 101
Joined: Sat Aug 24, 2019 12:15 am

### Finding order reaction using experiments

How do you determine which values to use from the list of experiments when trying to find the order reaction?

Hiba Alnajjar_2C
Posts: 108
Joined: Fri Aug 09, 2019 12:17 am

### Re: Finding order reaction using experiments

When trying to determine the order reaction, you should compare two experiments where the other reactant concentrations are held constant and the reactant you are analyzing is changing. For example, given the reaction A + B-->C, to find the order with respect to A, you would want to compare two experiments where the concentration of B is constant, but the concentration of A is changing. Then, you can determine how changes in [A] affect the rate (e.g. if doubling [A] without changing [B] leads to an increase in the rate by a factor of 4, it is second order with respect to A).