00:01
If you know the rate of the reaction with respect to any of these reactants or products, that rate must be divided by its coefficient in order to give the rate for the whole equation or for the whole reaction.
00:15
So the rate of the reaction would be one third or one divided by three because the coefficient on a is three.
00:24
It would be one third times the change in rate of a, which was negative 3 .5.
00:31
Six times 10 to the negative third molarity per second, which would be about negative 1 .19 times 10 to the negative third molarity per second.
00:49
So that would be the rate of the overall reaction.
01:02
This value would also be the rate of change of reactant b, because if you look at the coefficients, there is not one in front of b, which means it's like a one.
01:14
So that means the change in the concentration of b is one -third, the change in concentration of a.
01:22
So you look at those coefficients.
01:24
And basically, your mole ratios here, that 3 to 1 ratio is also your rate ratio.
01:32
A will be used up three times as fast as b.
01:35
So if the rate of a getting used up is negative 3 .56 times 10 to the negative 3 .5 .6 times 10 to the negative third...