题目
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);ΔH>0,则金刚石比石墨稳定 B.已知C(s)+O2(g)=CO2(g);ΔH1 C(s)+1/2O2(g)=CO(g);ΔH2,则ΔH2>ΔH1 C.已知2H2(g)+O2(g)=2H2O(g);ΔH=—483.6kJ/mol,则氢气的燃烧热为241.8kJ/mol D.已知NaOH(aq)+HCl(aq)=NaCl(aq)+H2O(l)ΔH=—57.3kJ/mol,则含20gNaOH的稀溶液与稀盐酸完全中和,中和热为28.65kJ/mol3、一I’m going to visit the
Science Museum tomorrow.
—_____.
A.Enjoy yourself!
B.Come on!
C.Good luck! D.It doesn’t matter.