00:01
In this question, we've been asked to determine the equilibrium constant.
00:04
And since we are dealing with thermodynamic state functions, we know we can use our standard gives energy change.
00:13
And this is equal to negative rt multiplied by lean, k, which is the equilibrium constant that we are looking at.
00:21
So if we make k subject to formula, we get being equal to the exponent of negative standard gives energy change, divided by rt.
00:33
So the goal here will be to determine the standard gives energy change.
00:39
And this we can determine from delta chi standard being equal to the enthalpy change, the standard enthalpy change minus t standard entropy change.
00:52
And we can get these because these are state functions.
00:55
So we can use the principle to say the standard enthalpy change of a reaction is equal the sum of the standard enthalpy change of formation of the products minus the sum of the standard enthalpy change of formation of the reactants and we always have to remember to multiply by the respective stoichiometric coefficients because these functions or these parameters are always given per more of subsist so we always have to make sure that we account for that by multiplying by the stoichiometric coefficient and this is the same approach that we use for the standard entropy change so calculating these values we are going to get them from our temples or appendices so looking at delta h standard this is going to be 2 multiplied by negative 393 .5 minus 2 multiplied by negative 110 .5 minus 1 multiplied by negative 110 .5 minus 1 multiplied by 0...