## Law of Mass Action

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Alison Trinh 1E
Posts: 89
Joined: Thu Jul 25, 2019 12:16 am

### Law of Mass Action

In the textbook, it discusses the law of mass action and how it relates to equilibrium, but I can't seem to grasp the idea. Could someone clarify what the law is and how it relates to chemical equilibrium?

alex_4l
Posts: 82
Joined: Thu Sep 26, 2019 12:18 am

### Re: Law of Mass Action

The Law of Mass Action is the principle that the rate of a chemical reaction is proportional to the masses of the reacting substances. Relating that to chemical equilibrium, the Law states that "if the system is at equilibrium at a given temp, then the following ratio is a constant." It's a little confusing to grasp but I hope that helps at least a little!

haileyramsey-1c
Posts: 89
Joined: Thu Jul 25, 2019 12:18 am

### Re: Law of Mass Action

The Law of Mass Action gives us the equation K= [C]^c[D^]d/[A]^a[B]^b. The law of mass action allows us to use the ratios of reactants and products of pressures and concentrations to determine the constant.

andrewcj 2C
Posts: 87
Joined: Thu Jul 11, 2019 12:17 am

### Re: Law of Mass Action

In short, the Law of Mass Action just states that for a set temperature, the equilibrium constant K does not change.