摘要:下列热化学方程式中.△H能正确表示物质的燃烧热的是 A.CO(g) +1/2O2(g) ==CO2(g); △H=-283.0 kJ/mol A. C(s) +1/2O2; △H=-110.5 kJ/mol B. H2(g) +1/2O2(g)==H2O(g); △H=-241.8 kJ/mol C. 2C8H18(l) +25O2(g)==16CO2(g)+18H2O(l); △H=-11036 kJ/mol
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下列热化学方程式中,△H能正确表示物质的燃烧热的是( )
A、2CO(g)+O2(g)═2CO2(g)△H=-566.0kJ/mol | ||
B、C(s)+
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C、CH4(g)+2O2(g)═CO2(g)+2H2O(l)△H=-890.31kJ/mol | ||
D、2C8H18(l)+25O2(g)═16CO2(g)+18H2O(l)△H=-11036kJ/mol |
下列热化学方程式中,ΔH能正确表示物质的燃烧热的是
A.CO(g)+1/2O2(g)====CO2(g) ΔH=-283.0 kJ·mol-1
B.C(s)+1/2O2(g)====CO(g) ΔH=-110.5 kJ·mol-1
C.H2(g)+1/2O2(g)====H2O(g) ΔH=-241.8 kJ·mol-1
D.2C8H18(l)+25O2(g)====16CO2(g)+18 H2O(l) ΔH=-11 036 kJ·mol-1
查看习题详情和答案>>下列热化学方程式中,△H能正确表示物质的燃烧热的是
A.CO(g) +1/2O2(g) ==CO2(g); △H=-283.0 kJ/mol |
B.C(s) +1/2O2(g) ="=CO(g);" △H=-110.5 kJ/mol |
C.H2(g) +1/2O2(g)==H2O(g); △H=-241.8 kJ/mol |
D.2C8H18(l) +25O2(g)==16CO2(g)+18H2O(l); △H=-11036 kJ/mol |
下列热化学方程式中,△H能正确表示物质的燃烧热或中和热的是
A.2H2(g) + O2(g) ==2H2O(l)ΔH==-572kJ·mol—1 |
B.KOH(aq)+ CH3COOH (aq) =CH3COOK (aq)+H2O(l);△H=-57.3 kJ·mol–1 |
C.C8H18(l)+ 12.5O2 (g) = 8CO2 (g)+ 9H2O(l);△H=-5518 kJ·mol–1 |
D.CH4(g) + 2O2(g) ==CO2(g) + 2H2O(g)ΔH==-533kJ·mol—1 |