下列依据热化学方程式得出的结论正确的是 ( )
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,则CH4的燃烧热为802.33 kJ/mol |
D.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 |