Question

Calculate the pressure of CO₂ gas at 700K in the heterogeneous equilibrium reaction CaCO₃(s) ⇋ CaO(s) + CO₂(g) if ∆Gº for this reaction is 130.2 kJ mol^–1.

Answer 1

ΔG° = 130.2 K J mol^-1

T = 700 k

ΔG° = -Rt In k(Apply)

Answer 2

use (deltaG)=2.303(R)(T)Ln(K)

AND .....

K=P_CO2   BECAUSE ITS THE ONLY GASEOUS SUBSTANCE IN THE RXN