題目列表(包括答案和解析)
H2(g)+O2(g)H2O(l) ΔH=-285.8 kJ·mol-1
CO(g)+O2(g)CO2(g)ΔH=-283.0 kJ·mol-1
C8H18(l)+O2(g)8CO2(g)+9H2O(l) ΔH=-5 518 kJ·mol-1
CH4(g)+2O2(g)CO2(g)+2H2O(l) ΔH=-890.3 kJ·mol-1
相同質(zhì)量的H2、CO、C8H18、CH4完全燃燒時(shí),放出熱量最少的是( )
A.H2(g) B.CO(g) C.C8H18(l) D.CH4(g)
H2(g)+1/2O2(g)H2O(l) ΔH=-285.8 kJ·mol-1
CO(g)+1/2O2(g)CO2(g) ΔH=-283.0 kJ·mol-1
C8H18(l)+25/2O2(g)8CO2(g)+9H2O(l) ΔH=-5 518 kJ·mol-1
CH4(g)+2O2(g)CO2(g)+2H2O(l) ΔH=-890.3 kJ·mol-1
相同質(zhì)量的H2、CO、C8H18、CH4完全燃燒時(shí),放出熱量最少的是( )
A.H2(g) B.CO(g) C.C8H18(l) D.CH4(g)
相同質(zhì)量的H2、CO、C8H18、CH4完全燃燒時(shí),放出熱量最少的是( )
A.H2(g) B.CO(g) C.C8H18(l) D.CH4(g)
H2(g)+O2(g)H2O(l) ΔH=-285.8 kJ·mol-1
CO(g)+O2(g) CO2(g) ΔH=-283.0 kJ·mol-1
C8H18(l)+O2(g) 8CO2(g)+9H2O(l) ΔH=-5 518 kJ·mol-1
CH4(g)+2O2(g) CO2(g)+2H2O(l) ΔH=-890.3 kJ·mol-1
相同質(zhì)量的H2、CO、C8H18、CH4完全燃燒時(shí),放出熱量最少的是( )
A.H2(g) B.CO(g) C.C8H18(l) D.CH4(g)
氫氣(H2)、一氧化碳(CO)、辛烷(C8H18)、甲烷(CH4)的熱化學(xué)方程式分別為: H2(g)+1/2O2(g)H2O(l) ;ΔH-285.8 kJ/molCO(g)+1/2O2(g)CO2(g); ΔH-283.0 kJ/molC8H18(l)+25/2O2(g)8CO2(g)+9H2O(l) ;ΔH-5518 kJ/molCH4(g)+2O2(g)CO2(g)+2H2O(l) ;ΔH-890.3 kJ/mol相同質(zhì)量的H2、CO、C8H18、CH4完全燃燒時(shí),放出熱量最少的是 | |
[ ] | |
A. |
H2(g) |
B. |
CO(g) |
C. |
C8H18(l) |
D. |
CH4(g) |
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