Question 33 of 96

S° will be highest for the reaction:

(a) Ca(s) + 1/2 O2(g) CaO(s)

(b) CaCO3(s)CaO(s) + CO2(g)

(c) C(s) + O2(g)CO2(g)

(d) N2(g) + O2(g)2NO(g)