摘要：下列热化学方程式能表示可燃物的燃烧热的是: A H2(g)+Cl2,△H=-184.6kJ/mol B CH4(g)+2O2(g)→CO2(g)+2H2O(g),△H=-802.3kJ/mol C CO(g)+1/2 O2(g)==CO2(g),△H=-283kJ/mol D 2H2(g)+O2(g)==2H2O(l),△H=-571.6kJ/mol
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下列热化学方程式能表示可燃物的燃烧热的是( )
A.H2(g)+Cl2(g)====2HCl(g)；ΔH=-184.6 kJ·mol-1
B.CH4(g)+2O2(g)====CO2(g)+2H2O(g)；ΔH=-802.3 kJ·mol-1
C.CO(g)+
O2(g)====CO2(g)；ΔH=-293 kJ·mol-1
D.2H2(g)+O2(g)====2H2O(l)；ΔH=-571.6 kJ·mol-1
查看习题详情和答案>>下列热化学方程式能表示可燃物的燃烧热的是：
- A.H2(g)+Cl2(g)＝＝2HCl(g)；△H＝-184.6kJ/mol
- B.CH4(g)+2O2(g)→CO2(g)+2H2O(g)；△H＝-802.3kJ/mol
- C.CO(g)+1/2O2(g)＝＝CO2(g)；△H＝-283kJ/mol
- D.2H2(g)+O2(g)＝＝2H2O(l)；△H＝-571.6kJ/mol
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下列热化学方程式能表示可燃物的燃烧热的是： | |
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A． |
H2(g)＋Cl2(g)＝＝2HCl(g)；△H＝－184.6kJ/mol |
B． |
CH4(g)＋2O2(g)→CO2(g)＋2H2O(g)；△H＝－802.3kJ/mol |
C． |
CO(g)＋1/2O2(g)＝＝CO2(g)；△H＝－283kJ/mol |
D． |
2H2(g)＋O2(g)＝＝2H2O(l)；△H＝－571.6kJ/mol |
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O2(g)＝CO2(g)；ΔH＝－283 kJ·mol－1
O2(g)=CO2(g)；△H=－283 kJ·mol-1