# Question #b54e2

##### 1 Answer

Jul 17, 2015

#### Answer:

Where [ ] represents concentrations at equilibrium.

#### Explanation:

In general for a reaction:

- the expression for
#K_c# is given by:

Where [ ] represents concentration of the species at equilibrium.

If we apply the general rule to this specific reaction:

we get:

Note that whenever you quote a value for