[holycow3121]

Calculate Delta Grxn for the following reaction:?
CaCO3(s) ---> CaO(s) + CO2(g)

Use the following reactions and given Delta Grxn values:

Ca(s) + CO2 (g) + 1/2 O2 (g) -----> CaCO3(s), Delta Grxn = - 734.4 kJ

2Ca(s) + O2(g) ------>2CaO(s), Delta Grxn = - 1206.6 kJ

FIND DELTA G rxn???

[gregdwulet]

http://en.wikipedia.org/wiki/Hess%27s_law

Scroll down to the "Extension to entropy and free energy" section.

This is the most help we can give for questions as vague as this.

[holycow3121]

how is it vague this was all i was given right out of the exam professor wrote?

[holycow3121]

Thanks anyway i got the answer 131.1 Delta G rxn