[skp524]

Suppose that I want to calculate a equilibrium constant of a reaction at a temperature slightly different from 298K. Can I first find the standard Gibbs free energy change of reaction at that temperature by the following steps and then use delta G =-RTlnK to find find the equilibrium constant at that temperature.
1.Use standard enthalpy of products and reactants with the aid of Kirchhoff 's law
(delta H m(T2)= delta H m(298) + summation delta Cpm *delta T)
 to convert the enthaply change of reaction into that temperature
2. Similarly , convert entropy change of reaction by a formula close to the kirchhoff 's law (delta S m(T2)= delta S m(298) + delta Cpm *ln(T2/298) )
3. Use delta G(T2) = delta H( T2) - T2 deltaS(T2)
4. delta G (T2)= - R T2 ln (K at T2 )
(Assume that Cpm is constant over this range of change in temperature)

Can I find the K at T2 by the above steps?

Follow-up question:
For delta G=-RTlnK, does the K refer to Kc or Kp?