00:01
To show why the equilibrium constant approaches unity at sufficiently high temperatures for the given reaction, we use thermodynamic principles.
00:11
So let's focus on the key concepts.
00:14
The equilibrium constant k is represented as the following.
00:33
The equilibrium constant depends on the gibbs free energy, which is a change in energy, and k is equal to the following.
00:46
Where r is the universal gas constant, t is the temperature in kelvin, and therefore the change in free energy is equal to the following.
01:07
Now, high temperatures, at very high temperatures, the term dominates the change in free energy, so the equilibrium constant is influenced heavily by the entropy change.
01:35
Now, analyzing the reaction, the bond strength, the reaction involves an exchange of bonds, breaking, hcl and dbr bonds and forming d .c .l.
01:51
And hbr bonds...