What is ΔG°rxn?

Question

Given the following equation,H₂O(g) + CO(g) → H₂(g) + CO₂(g) ΔG°_rxn = -28.6 kJ

Calculate ΔG°_rxn for the following reaction.8 H₂O(g) + 8 CO(g) → 8 H₂(g) + 8 CO₂(g)

Answer 1

Given:

H₂O(g) + CO(g) → H₂(g) + CO₂(g) ΔG°_rxn = -28.6 kJ

Asked for:

8 H₂O(g) + 8 CO(g) → 8 H₂(g) + 8 CO₂(g) ∆Gº = ?

The equation in question is 8x the given equation, so we simply multiply the ∆Gº_rxn by 8.

-28.6 x 8 = -229 kJ = ∆G_rxn