X and y can only be determined experimentally.
You cannot look at a reaction and know what those powers are.
You have to perform some experiments to determine them.
Now, we're gonna learn how to determine those powers In our next learning
objective in our next unit, our next series of lessons.
But for now we're going to examine some and
see how we can use that rate law to make a judgment about the reaction.
Now here's a reaction, A plus B going to C plus D,
I have one coefficient and somebody went and did some experiments.
And they noticed that as the reaction takes place, and they did it and
monitored it many times, they saw that at certain concentrations of A,
the reaction took place in various rates and they found a nice straight line.
This straight line tells me it's a linear relationship and
tells me it's a direct proportionality.
So we could say that the rate of reaction is directly proportional to A.