试题与答案

以下反应可用焓判据来解释的是 [ ] A. 硝酸铵自发的溶于水 B. 2N2O5

题型:不定项选择题

题目:

以下反应可用焓判据来解释的是 [ ]

A. 硝酸铵自发的溶于水 

B. 2N2O5(g)=4NO2(g)+O2(g) △H=+56.7 kJ. mol-1

C. ( NH4)2 CO3(s)=NH4HCO3(s)+NH3(g) △H=+74.9kJ.mol-1

D. 2H2(g)+O2(g)=2H2O(l) △H=-285.8 kJ.mol-1

答案:

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