题目列表(包括答案和解析)
A.C(s)+
O2(g)
CO(g)ΔH=-393.5 kJ·mol-1
B.2H2(g)+O2(g)
2H2O(g)ΔH=+571.6 kJ·mol-1
C.CH4(g)+2O2(g)
CO2(g)+2H2O(g)ΔH=-890.3 kJ·mol-1
D.
C6H12O6(s)+3O2(g)
3CO2(g)+3H2O(l) ΔH=-1 400 kJ·mol-1
A.C(s)+
O2(g)==CO(g)；△H=-393.5 kJ/mol
B.2H2(g)+O2(g)==2H2O(g)；△H=+571.6 kJ/mol
C.CH4(g)+2O2(g)==CO2(g)+2H2O(g)；△H=-890.3 kJ/mol
D.
C6H12O6(s)+3O2(g) === 3CO2(g)+3H2O(1)；△H=-1400 kJ/mol
A.C(s)+1/2O2(g)====CO(g);ΔH=-393.5 kJ·mol-1
B.2H2(g)+O2(g) ====2H2O(g);ΔH=+571.6 kJ·mol-1
C.CH4(g)+2O2(g) ====CO2(g)+2H2O(g);ΔH=-890.3 kJ·mol-1
D.1/2C6H12O6(s)+3O2(g) ====3CO2(g)+3H2O(1);ΔH=-1 400 kJ·mol-1
25℃、101 kPa下，碳、氢气、甲烷和葡萄糖的燃烧热依次是393.5 kJ/mol、285.8 kJ/mol、890.3 kJ/mol、2 800 kJ/mol,则下列热化学方程式正确的是（ ）
A．C(s)+ O2(g)=CO(g)；△H=－393.5 kJ/mol
B．2H2(g)+O2(g)=2H2O(g)；△H=＋571.6 kJ/mol
C．CH4(g)+2O2(g)=CO2(g)+2H2O(g)；△H=－890.3 kJ/mol
D．C6H12O6（s）+3O2(g)=3CO2(g)+3H2O(l)；△H=－1 400 kJ/mol
25℃、101 kPa下，碳、氢气、甲烷和葡萄糖的燃烧热依次是393.5 kJ／mol、285.8 kJ／mol、890.3 kJ／mol、2800 kJ／mol 。下列热化学方程式中，正确的是．
A．c(s)+1/2O2(g)=CO(g)；△H=－393.5 kJ／mol
B．2H2(g)+O2(g)=2H2O(l)；△H=+571.6 kJ／mol
C．CH4(g)+2O2(g)=CO2(g)+2H2O(g)；△H=－890.3 kJ／mol
D．1/2C6H12O6(s)+3O2(g)=3CO2(g)+3H2O(l)；△H=－1400 kJ／mol
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