The overall order of a reaction is 2. the units of the rate constant for the reaction are
a. 1/m
b. 1/s m⁻¹s⁻¹
c. m/s
d. s/m²

Explanation:

You can infere the units of the rate constant for an overall order 2 reaction departing from the simplified case of a two identical reactants combined in a single elementary step:

For that equation the differenttial form of the rate of reaction is:

The units of [A] are M¹ (i.e. M), and the units of  - d [A] / dt are M¹ s⁻¹ . . . ( M stands for molar concentration)

Substituting the unis on both sides of the rate equation you get:

Solving for K:

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

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