00:01
Hello, in this question we have been given bond enthalpyes and we have to find the enthalpy change for formation of ammonia using the bond enthalpy is given.
00:11
So first let's write the balance chemical equation for formation of ammonia.
00:23
Okay, so this is the balanced chemical equation for formation of ammonia.
00:27
Now, now we use the formula.
00:31
Delta h formation of ammonia will be equal to sum of bond energy, bond energy, bond energy.
00:48
On reactant side minus some of bond energies on the product side.
01:16
Okay, so let's do this one.
01:19
From the data, what we have been given for.
01:25
So on the right, on the left hand side, we have nitrogen and hydrogen.
01:29
So we can, so just to be clear, we can like draw the, draw the, like, how the structures of these molecules here.
01:38
So n will be.
01:45
So just to be clear, like to be very sure, what are the number of, bonds in each of these, we can write the structures here.
01:52
So nitrogen is like this.
01:54
So there is one triple bond between nitrogen and nitrogen.
01:58
Then hydrogen is like this.
02:01
Then ammonia is like this.
02:03
So there are three bonds, three nh bonds in ammonia...