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下列有关反应热的分析正确的是()A.中和热:57.3kJ/mol对应反应:Ba(OH)2(aq)+H2SO4(aq)═BaSO4(s)+2H2O(I)△H=-114.6kJ/molB.中和热:57.3kJ/mol对应反应NH3•H2O(aq)+H+(aq)..NH+4(aq)+H2O(
题目详情
下列有关反应热的分析正确的是( )
A.中和热:57.3kJ/mol对应反应:Ba(OH)2(aq)+H2SO4(aq)═BaSO4(s)+2H2O(I)△H=-114.6kJ/mol
B.中和热:57.3kJ/mol对应反应NH3•H2O(aq)+H+(aq)
N
(aq)+H2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol
22442
NH3•H2O(aq)+H+(aq)
N
(aq)+H2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/molH3•H2O(aq)+H+(aq)
N
(aq)+H2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/molH3•H2O(aq)+H+(aq)
N
(aq)+H2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol3•H2O(aq)+H+(aq)
N
(aq)+H2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/molH2O(aq)+H+(aq)
N
(aq)+H2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/molH2O(aq)+H+(aq)
N
(aq)+H2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol2O(aq)+H+(aq)
N
(aq)+H2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/molH+(aq)
N
(aq)+H2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/molH+(aq)
N
(aq)+H2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol+(aq)
N
(aq)+H2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol
H H
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/molH2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol2O(I)△H=-57.3kJ/mol
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol
2H2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/molH2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/molH2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol2(g)+
O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol
1 1 2 2 O2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/molO2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol2(g)
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol
H2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/molH2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol2O(g)△H>-285.8kJ/mol
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
2CO(g)△H=-787kJ/mol
2C(s)+O2(g)
2CO(g)△H=-787kJ/molO2(g)
2CO(g)△H=-787kJ/molO2(g)
2CO(g)△H=-787kJ/mol2(g)
2CO(g)△H=-787kJ/mol
A.中和热:57.3kJ/mol对应反应:Ba(OH)2(aq)+H2SO4(aq)═BaSO4(s)+2H2O(I)△H=-114.6kJ/mol
B.中和热:57.3kJ/mol对应反应NH3•H2O(aq)+H+(aq)
|
H | + 4 |
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
|
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
|
22442
NH3•H2O(aq)+H+(aq)
|
H | + 4 |
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
|
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
|
|
H | + 4 |
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
|
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
|
|
H | + 4 |
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
|
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
|
|
H | + 4 |
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
|
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
|
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H | + 4 |
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
|
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
|
|
H | + 4 |
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
|
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
|
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H | + 4 |
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
|
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
|
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H | + 4 |
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
|
D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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H | + 4 |
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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H | + 4 |
C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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H2O(I)△H=-57.3kJ/molC.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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C.H2的燃烧热:△H=285.8kJ/mol对应反应:H2(g)+
1 |
2 |
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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2H2(g)+
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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D.碳的燃烧热:393.5kJ/mol对应反应:2C(s)+O2(g)
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2C(s)+O2(g)
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▼优质解答
答案和解析
A、氢氧化钡和硫酸反应除生成2mol水外还生成硫酸钡沉淀放热,所以Ba(OH)22(aq)+H22SO44(aq)═BaSO44(s)+2H22O(I)△H<-114.6kJ/mol,故A错误;
B、一水合氨存在电离平衡,电离过程是吸热过程,反应的焓变>-57.3KJ/mol,故B错误;
C、水蒸气不是稳定氧化物,选项中不是氢气的燃烧热,气态水转化为稳定氧化物液态水放热,△H>-285.8kJ/mol,故C正确;
D、燃烧热是1mol纯净的可燃物完全燃烧生成稳定氧化物放出的热量,一氧化碳不是稳定氧化物,△H>787KJ/mol,故D错误;
故选C.
B、一水合氨存在电离平衡,电离过程是吸热过程,反应的焓变>-57.3KJ/mol,故B错误;
C、水蒸气不是稳定氧化物,选项中不是氢气的燃烧热,气态水转化为稳定氧化物液态水放热,△H>-285.8kJ/mol,故C正确;
D、燃烧热是1mol纯净的可燃物完全燃烧生成稳定氧化物放出的热量,一氧化碳不是稳定氧化物,△H>787KJ/mol,故D错误;
故选C.
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