00:02
So here we can calculate the standard free energy change of the using the gibbs -hemholtz equation.
00:08
Delta g -0 is equal to delta -h -0 minus t delta -s -not.
00:13
So the temperature, make sure it's in units of kelvin.
00:17
Delta -s -0 and delta -h -not, we can calculate independently.
00:21
Delta s -not is equal to the sum of the moles, s -0 of the product, subtract the sum of the moles, s -knot of the reactants.
00:29
Very similar format with delta h -0.
00:33
So we've got the heat and the disorder here.
00:35
So we've got heat and disorder.
00:42
Delta h -0 is equal to the sum of the moles of h -0 of the product, subtract the sum of the moles h -0 of the reactants.
00:50
So very similar, like we've mentioned.
00:53
And so these are the equations that we need to be plugging in our values to in order to calculate delta g -0.
01:02
So we, we with this first example, what we need to do is calculate delta h0.
01:08
That is 290 .7 kilojoules.
01:12
And then we know delta s not, so all we do is just plug our values straight into delta gnaut equation, equation one, and we get delta g naught that is 284 .70 kilojoules...