4. Without making calculations, set in which of the following processes ΔS<0:
a) 2NH3(g) → N2(g) 3H2(g)
b) CO2(c) → CO2(g)
c) 2NO(g) O2(g) → 2NO2(g)
d) 2H2S(g) 3O2(g) →2H2O(l) SO2(g)
e) 2CH3OH(g) 3O2(g) → 4H2O(g) 2CO2(g)
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