00:01
You'll notice with experiments 1 and 2 that when we triple the concentration of just cl2, so we're not changing the concentration of no, the concentration of cl2 is going from 0 .101010 to 0 .30 molar.
00:23
The rate ends up being tripled also.
00:27
It goes from 0 .630 to 1 .92 molar per second.
00:36
So when we triple the rate, or when we triple the concentration and it triples the rate, this is indicative of first order.
00:44
So it's first order with respect to cl2.
00:50
If we then look at experiments 1 and 3, we see that the cl2 concentration, we see that the cl2 concentration, is staying constant, but we are taking the ano concentration from 0 .200 and increasing it to 0 .80.
01:13
So this is a fourfold increase in concentration.
01:17
The rate then goes from 0 .630 to 2 .58 molar per second.
01:28
If we take .63 and we multiply it by 4, we get 2 .58...