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A.2H+(aq)+
(aq)+Ba2+(aq)+2OH-(aq)====BaSO4(s)+2H2O(l);ΔH=-57.3 kJ/mol
B.KOH(aq)+
H2SO4(aq)====
K2SO4(aq)+H2O(l);ΔH=-57.3 kJ/mol
C.C8H18(l)+
O2(g)====8CO2(g)+9H2O(g);ΔH=-5 518 kJ/mol
D.2C8H18(g)+25O2(g)====16CO2(g)+18H2O(l);ΔH=-5 518 kJ/mol
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25℃,101 kPa时,强酸与强碱的稀溶液发生中和反应的中和热为57.3 kJ/mol,辛烷的燃烧热为5518 kJ/mol.下列热化学方程式书写正确的是
A.2H+(aq)+SO42—(aq)+Ba2+(aq)+2OH-(aq)===BaSO4(s)+2H2O(l);ΔH=-57.3 kJ/mol
B.KOH(aq)+1/2H2SO4(aq)===1/2K2SO4(aq)+H2O(l);ΔH=-57.3 kJ/mol
C.C8H18(l)+25/2O2(g)===8CO2(g)+9H2O(g);ΔH=-5518 kJ/mol
D.2C8H18(g)+25O2(g)===16CO2(g)+18H2O(l);ΔH=-5518 kJ/mol
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25℃,101 kPa时,强酸与强碱的稀溶液发生中和反应的中和热为57.3 kJ/mol,辛烷的燃烧热为5518 kJ/mol.下列热化学方程式书写正确的是( )
A.2H+(aq)+SO42—(aq)+Ba2+(aq)+2OH-(aq)===BaSO4(s)+2H2O(l) ΔH=-57.3 kJ/mol
B.KOH(aq)+1/2H2SO4(aq)===1/2K2SO4(aq)+H2O(l) ΔH=-57.3 kJ/mol
C.C8H18(l)+25/2O2(g)===8CO2(g)+9H2O(g) ΔH=-5518 kJ/mol
D.2C8H18(g)+25O2(g)===16CO2(g)+18H2O(l) ΔH=-5518 kJ/mol
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kJ/mol。下列热化学方程式书写正确的是
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B. KOH(aq)+1/2H2SO4(aq)=1/2K2SO4(aq)+H2O(l) △H=-57. 3 kJ/mol
C. C8H18(l)+25/2O2(g)=8CO2(g)+9H2O( g) △H=-5518kJ/mol
D. 2C8H18(g)+25O2(g)=16CO2(g)+18H2O(l) △H=-5 518 kJ/mol
kJ/mol。下列热化学方程式书写正确的是
B. KOH(aq)+1/2H2SO4(aq)=1/2K2SO4(aq)+H2O(l) △H=-57. 3 kJ/mol
C. C8H18(l)+25/2O2(g)=8CO2(g)+9H2O( g) △H=-5518kJ/mol
D. 2C8H18(g)+25O2(g)=16CO2(g)+18H2O(l) △H=-5 518 kJ/mol