Standard Conditions and Temperature

[Ariana de Souza 4C]

Hello! I just wanted to get something cleared up -- what is the relationship between the standard condition of G and H and S and temperature? We can still say that it is (delta G)^o if the temperature isn't 298 K, right? And all we need for standard conditions is the pressure to be 1 atm and for the reactants and products to be at their standard state?
But then the equation (Delta G)^o = -RT lnK requires us to plug in the temperature to get the specific change in G^o at that temperature. So it would change, depending on the temperature? And if we calculated delta G^o at one temperature and needed it another temperature, how would we do that? Please help!

[Chem_Mod]

Standard conditions refer to 298K, 1 atm. Always.
The equation does not change because it only refers to standard state conditions. If you want an equation that shows the change of Gibbs free energy with temperature, you would need to use .

For standard state conditions, the following relationships are relevant:

[Ariana de Souza 4C]

But then in the 2016 final problem 2A, we use the standard gibbs free energy and use this equation -- -- with the standard gibbs free energy when T=1943. Why can we do that?

[KayleeMcCord1F]

Also, how should we know when to leave answers in terms of J vs. kJ?

[Michelle Nguyen 2L]

Standard conditions only affect pressure and concentration (1 bar/atm and 1 M for solutions)

[Abel Thomas 2C]

Also, how should we know when to leave answers in terms of J vs. kJ?

It usually does not matter unless the question specifically asks for one or the other.