00:01
This is a multi -step problem.
00:03
In order to calculate delta h standard for the reaction, we first need to calculate the equilibrium constants at the two different temperatures.
00:13
To calculate the equilibrium constants, we need to find out what the equilibrium pressures are.
00:21
For the first scenario, at 298 kelvin, we start with 755 tor of x2 and nothing of x.
00:30
When equilibrium is achieved, this will decrease by x and this will increase by 2x.
00:36
So we'll have 755 minus x for x2 at equilibrium and 2x.
00:43
They tell us, though, that 2x is equal to 103 tor.
00:48
That's the pressure of x at equilibrium.
00:50
So that means x is 51 .5 tor.
00:55
So now we can calculate kp.
00:57
It'll be a ratio of pressures and atmospheres...