題目列表(包括答案和解析)
A、C(s)+
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B、2H2(g)+O2(g)?2H2O(l)△H=-571.6 kJ/mol | ||
C、CH4(g)+2O2(g)?CO2(g)+2H2O(g)△H=-890.3 kJ/mol | ||
D、
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25℃、101kPa下,碳、氫氣、甲烷和葡萄糖的燃燒熱依次是ΔH=-393.5kJ/mol、ΔH=-285.8kJ/mol、ΔH=-890.3kJ/mol、ΔH=-2800kJ/mol,則下列熱化學(xué)方程式正確的是( )
A.C(s)+O2(g)===CO(g)ΔH=-393.5kJ/mol |
B.2H2(g)+O2(g)===2H2O(g)ΔH=+571.6kJ/mol |
C.CH4(g)+2O2(g)===CO2(g)+2H2O(g)ΔH=-890.3kJ/mol |
D.C6H12O6(s)+3O2(g)===3CO2(g)+3H2O(l)ΔH=-1400kJ/mol |
25℃、101kPa下,碳、氫氣、甲烷和葡萄糖的燃燒熱依次是ΔH=-393.5kJ/mol、ΔH=-285.8kJ/mol、ΔH=-890.3kJ/mol、ΔH=-2800kJ/mol,則下列熱化學(xué)方程式正確的是( )
A.C(s)+O2(g)===CO(g)ΔH=-393.5kJ/mol
B.2H2(g)+O2(g)===2H2O(g)ΔH=+571.6kJ/mol
C.CH4(g)+2O2(g)===CO2(g)+2H2O(g)ΔH=-890.3kJ/mol
D.C6H12O6(s)+3O2(g)===3CO2(g)+3H2O(l)ΔH=-1400kJ/mol
25℃、101kPa下,碳、氫氣、甲烷和葡萄糖的燃燒熱依次是393.5kJ/mol、285.8kJ/mol、890.3kJ/mol、2800kJ/mol,則下列熱化學(xué)方程式正確的是
A.C(s)+1/2O2(g)=CO(g);△H=-393.5kJ/mol
B.2H2(g)+O2(g)=2H2O(g);△H=+571.6kJ/mol
C.CH4(g)+2O2(g)=CO2(g)+2H2O(g);△H=-890.3 kJ/mol
D.1/2C6H12O6(g)+3O2(g)=3CO2(g)+3H2O(l);△H=-1400kJ/mol
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