8.已知:101 k Pa时辛烷的燃烧热为5518 kJ · mol-1.强酸和强碱在稀溶液中发生反应时的中和热为57.3 kJ · mol-1.则下列热化学方程式书写正确的是 ① 2C8H18( l ) + 25O2(g) = 16CO2(g) + 18H2O(g),△H = -11 036 kJ · mol-1 ②2C8H18( l ) + 25O2(g) = 16CO2(g) + 18H2O(l),△H = -11 036 kJ· mol-1 ③ H+ + OH- = H2O,△H = -57.3 kJ · mol-1 ④ 2NaOH(aq) + H2SO4(aq) = Na2SO4(aq) +2 H2O( l ),△H = -114.6 kJ · mol-1 A.①③ B.②④ C.②③ D.只有② 查看更多

 

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已知:强酸和强碱在稀溶液中发生反应时的中和热为57.3 kJ · mol-1,101 k Pa时辛烷的燃烧热为5518 kJ·mol-1。则下列热化学方程式书写正确的是


  1. A.
    H++OH-=H2O△H = -57.3kJ·mol-1
  2. B.
    2NaOH(aq)+ H2SO4(aq)= Na2SO4(aq)+2H2O(l)△H = -114.6 kJ·mol-1
  3. C.
    2C8H18(l) + 25O2(g) = 16CO2(g)+18H2O(g)△H = -11036 kJ·mol-1
  4. D.
    2C8H18(l) + 25O2(g) = 16CO2(g)+18H2O(l)△H = -5518kJ·mol-1

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已知:强酸和强碱在稀溶液中发生反应时的中和热为57.3 kJ · mol-1,101 k Pa时辛烷

的燃烧热为5518 kJ·mol-1。则下列热化学方程式书写正确的是

A.H+ + OH = H2O   △H = -57.3kJ·mol1

B.2NaOH(aq)+ H2SO4(aq)= Na2SO4(aq)+2 H2O(l)  △H =-114.6 kJ·mol1

C.2C8H18(l) + 25O2(g) = 16CO2(g) + 18H2O(g)  △H = -11036 kJ·mol1

D.2C8H18(l) + 25O2(g) = 16CO2(g))+18H2O(l)  △H = -11036kJ·mol1

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已知:强酸和强碱在稀溶液中发生反应时的中和热为57.3 kJ · mol-1,101 k Pa时辛烷的燃烧热为5518 kJ·mol-1。则下列热化学方程式书写正确的是

A.H++OH=H2O△H = -57.3kJ·mol1
B.2NaOH(aq)+ H2SO4(aq)= Na2SO4(aq)+2H2O(l)△H = -114.6 kJ·mol1
C.2C8H18(l) + 25O2(g) = 16CO2(g)+18H2O(g)△H = -11036 kJ·mol1
D.2C8H18(l) + 25O2(g) = 16CO2(g)+18H2O(l)△H = -5518kJ·mol1

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已知:强酸和强碱在稀溶液中发生反应时的中和热为57.3 kJ · mol-1,101 k Pa时辛烷的燃烧热为5518 kJ·mol-1。则下列热化学方程式书写正确的是

A.H++OH=H2O  △H = -57.3kJ·mol1

B.2NaOH(aq)+ H2SO4(aq)= Na2SO4(aq)+2H2O(l)  △H = -114.6 kJ·mol1

C.2C8H18(l) + 25O2(g) = 16CO2(g)+18H2O(g)  △H = -11036 kJ·mol1

D.2C8H18(l) + 25O2(g) = 16CO2(g)+18H2O(l)  △H = -5518kJ·mol1

 

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已知:强酸和强碱在稀溶液中发生反应时的中和热为57.3 kJ · mol-1,101 k Pa时辛烷的燃烧热为5518 kJ·mol-1。则下列热化学方程式书写正确的是
A.H++OH=H2O△H = -57.3kJ·mol1
B.2NaOH(aq)+ H2SO4(aq)= Na2SO4(aq)+2H2O(l)△H = -114.6 kJ·mol1
C.2C8H18(l) + 25O2(g) = 16CO2(g)+18H2O(g)△H = -11036 kJ·mol1
D.2C8H18(l) + 25O2(g) = 16CO2(g)+18H2O(l)△H = -5518kJ·mol1

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