Question

A chemist studies the reaction below. 2NO(g) + Cl₂ (g) 2NOCl(g) He performs three experiments using different concentrations and measures the initial reaction rates. Experiment [Cl₂ ] (mol/L) [NO] (mol/L) Initial Rate ((mol/L)/s) 10.30.4 0.02 20.30.8 0.08 30.60.8 0.16.

Which two experiments should you compare to find the rate order of NO?

a) Experiment 1 and Experiment 2
b) Experiment 1 and Experiment 3
c) Experiment 2 and Experiment 3
d) All three experiments

Answer 1

To find the rate order of NO, we should compare Experiment 1 and Experiment 3 which have the same concentration of Cl₂ but different concentrations of NO.

Step-by-step explanation:

To determine the rate order of NO in the given reaction, we need to compare two experiments that have the same concentration of Cl₂ but different concentrations of NO.

The experiments that meet this criteria are Experiment 1 and Experiment 3, where both of them have [Cl₂] = 0.02 M and different [NO] values.

By comparing the initial rates of these two experiments, we can determine the rate order of NO.