00:02
Hi there.
00:03
When we are writing an equilibrium expression, which is k -e -q for a reaction that is at equilibrium, we take the concentration of the products over the concentration of the reactants.
00:24
If there's more than one product or more than one reactant, we multiply them together.
00:31
And any coefficients become exponents.
00:35
So coefficients in the balanced equation become exponents.
00:42
Components multiply more than one reactant or more than one product.
01:10
Okay, so we have an equilibrium expression here that tells us we have a squared, or the concentration of a squared, times the concentration of b over the concentration of c.
01:41
So we're given this equilibrium expression.
01:47
So working this backwards.
01:50
In the numerator are the products...