00:01
I don't have access to the bond energies in alex, but i do have access to bond energies.
00:07
My values might be slightly different than what's in alex, but they should be very close.
00:14
Either way, this should help you.
00:18
First, we need to draw out the lewis structures for the reactants and the products.
00:23
We recognize carbon dioxide has two double co bonds and water.
00:31
Has two ho single bonds.
00:36
In addition, the o2 bond is a double bond and the ch4, the c -h bonds are single bonds.
00:48
Then from the balanced chemical reaction, we can estimate delta h for this gas phase process by summing up the bond energies that need to be broken.
00:58
So we have four times a c -h bond energy.
01:03
Which in the table i have, ch is 410...