00:01
To determine the equilibrium constant at the two different temperatures, we first need to calculate delta g standard at the two different temperatures.
00:13
Our reaction is this one shown here.
00:16
We recognize that the equilibrium constant is equal to the pressure of carbon dioxide.
00:24
So once we get the equilibrium constant from delta g standard, that value is the partial pressure of carbon dioxide.
00:32
K, which will be the partial pressure of carbon dioxide, is equal to negative delta g standard divided by rt, and we get delta g standard by taking delta h standard minus t delta s.
00:47
So at 100 degrees celsius, or 373 kelvin, we'll take our delta h standard that they provided minus 373, which is the kelvin temperature for 100 degrees celsius, multiply by our delta s value, 151 .3 joules per kelvin mole is 0 .1513 kilojoules per kelvin mole.
01:11
We do that so that we get our delta g standard in units of kilojoules, positive 31 .9 kilojoules per mole, or 31 ,900 joules per mole.
01:25
We need it in units of joules per mole in this equation to calculate k...