For which one of the following reaction, the graph  against T is almost horizontal to temperature axis

ΔG=ΔH-TΔS ΔH and ΔG almost remain constant with temperature. So ΔG varies with temperature.Case – I: - When ΔS=0, ΔG  is unaffected by ‘T’. Case – II: When ΔS=−ve, ΔG increases with increase in ‘T’Case – III: When ΔS=+ve, ΔG decreases with increase in ‘T’   C(s)+O2(g)→CO2(g) ΔS=0         ΔG is unaffected by temperature.