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2MQ |
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2MQ |
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2MQ |
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A.C3H8(g)+5O2(g)═3CO2(g)+4H2O(g);△H=-2221.5kJ•mol-1 |
B.2C3H8(g)+10O2(g)═6CO2(g)+8H2O(l);△H=-2221.5kJ•mol-1 |
C.C3H8(g)+5O2(g)═3CO2(g)+4H2O(g);△H=+2221.5kJ•mol-1 |
D.C3H8(g)+5O2(g)═3CO2(g)+4H2O(l);△H=-2221.5kJ•mol-1 |
A.C(s)+O2(g)=CO2(g);△H=+393.5kJ/mol | ||
B.C(s)+
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C.C+O2=CO2;△H=-393.5kJ/mol | ||
D.C(s)+O2(g)=CO2(g);△H=-393.5kJ/mol |
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1 |
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A.1molH2(g)和1molI2(g)完全反应生成2molHI(g)需要吸收26kJ热量 |
B.1个H2(g)分子和1个I2(g)分子完全反应生成2个HI(g)需要吸收52kJ热量 |
C.1molH2(g)与1molI2(g)完全反应生成2molHI(g)需吸收52kJ热量 |
D.1molH2(g)与1molI2(g)完全反应生成2molHI(g)放出26kJ热量 |
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