下列反应中,一定不能自发进行的是(    )A.2KClO3(s)2KCl(s)+3O2(g)   ΔH

下列反应中,一定不能自发进行的是(    )

A.2KClO3(s)2KCl(s)+3O2(g)   ΔH=-78.03 kJ·mol-1    ΔS=1 110 J·mol-1·K-1

B.CO(g) C(s,石墨)+O2(g)   ΔH=110.5 kJ·mol-1   ΔS=-89.36 J·mol-1·K-1

C.4Fe(OH)2(s)+2H2O(l)+O2(g) 4Fe(OH)3(s)   ΔH=-444.3 kJ·mol-1    ΔS=-280.1 J·mol-1·K-1

D.NH4HCO3(s)+CH3COOH(aq) CO2(g)+CH3COONH4(aq)+H2O(l)

ΔH=37.301 kJ·mol-1    ΔS=184.05 J·mol-1·K-1

答案

解析:计算其ΔH-TΔS,若小于0,自发进行;大于0,非自发进行。

答案:B

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