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)+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-1、285.8 kJ·mol-1、890.3 kJ·mol-1、2 800 kJ·mol-1,则下列热化学方程式正确的是????? ( )。
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
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) ΔH=-393.5 kJ/mol
B.2H2(g)+O2(g)=2H2O(g) ΔH=+571.6 kJ/mol
C.C6H12O6(s)+3O2(g)=3CO2(g)+3H2O(l) ΔH=-1 400 kJ/mol
D.CH4(g)+2O2(g)=CO2(g)+2H2O(g) ΔH=-890.3 kJ/mol
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com