题目内容

下列依据热化学方程式得出的结论正确的是

2021-09-17

A.已知C (石墨，s)=C(金刚石，s)；△H>0，则金刚石比石墨稳定

B.已知C (s)+O2(g)=CO2(g)；△H1，C (s)+1/2O2(g)=CO(g)；△H2，则△H2>△H1

C.已知CH4 (g)+2O2(g)=CO2(g)+2H2O(g)；△H=-802.33kJ/mol

D.则CH4的燃烧热为802.33 kJ/mol

E.已知NaOH(aq)+HCl(aq)=NaCl(aq)+ H2O(l) △H=-57.3kJ/mol，则含20gNaOH的稀溶液与稀盐酸完全中和，中和热为28.65kJ/mol

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