Use the standard Gibbs free energies of formation in Appendix 2A to calculate G for each of

Use the standard Gibbs free energies of formation in Appendix 2A to calculate ΔG° for each of the following reactions at 25 °C. Comment on the spontaneity of each reaction under standard conditions at 25 °C.

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(a) 2 SO₂ (g) + O₂(g) →2 SO3(g) (b) CaCO3(s, calcite) →CaO(s) + CO₂(g) (c) 2 CgHıs(l) + 25 O,(g) → 16 CO,(g) + 18 H,O(1) 18