题目列表(包括答案和解析)
A.C(s)+1/2O2(g)====CO(g);△H=-393.5 kJ/mol
B.2H2(g)+O2(g)====2H2O(1);△H=+571.6 kJ/mol
C.CH4(g)+2O2(g)====CO2(g)+2H2O(g);△H=-890.3 kJ/mol
D.C6H12O6(s)+6O2(g)====6CO2(g)+6H2O(1);△H=-2 800 kJ/mol
25℃、101kPa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,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(l) △H= +571.6 kJ/mol
C.CH4(g)+2O2(g)=CO2(g)+2H2O(g) △H= ―890.3 kJ/mol
D.C6H12O6(s)+6O2(g)=6CO2(g)+6H2O(l) △H= ―2800 kJ/mol
25℃、101kPa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
890.3kJ/mol、2800 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.2H2O(l)=2H2(g)+O2(g) △H=+571.6 kJ/mol
C.CH4(g)+2O2(g)=CO2(g)+2H2O(g) △H= ―890.3 kJ/mol
D.C6H12O6(s)+6O2(g)=6CO2(g)+6H2O(l) △H= ―2800 kJ/mol
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
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