00:01
Okay, so we're told that carbon and oxygen combine to make carbon dioxide, and that the delta h of formation here is negative 393 .5 kilojoules.
00:17
And we want to know the delta h of reaction.
00:23
So we know that the value for the co2 is negative 393 .5, and we're going to use the equation delta h of reaction is equal to the sum of the products minus the sum of the reactants.
00:55
So the delta h of reaction for this particular reaction, products, we have one product, co2, we have one mole with it because the coefficients one, and the delta h of formation is minus 393 .5 kilojoules per mole.
01:15
Given in the problem.
01:16
And that's our only product.
01:18
So then we subtract the sum of the reactants and there's one mole of carbon.
01:22
We're not given its delta h of formation because elements are not formed...