For the reaction

Question

1 CaCO3(s) + 2 HCl(aq) <==> 1 CaCl2(aq) + 1 H2O(l) + 1 CO2(g)

Calculate K, the equilibrium constant, from thermodynamic data at 293 K.

(Hint #1: Assume that S and H do not change with temperature.)
(Hint #2: Work in J/mol)

Answer 1

Can you look up delta Go in your tables?
DGorxn = (n*DGoproducts) - (n*DGoreactants).
Then DGo = -RT*lnK and solve for K.