B.1/2NaOH=1/2NaCl(aq)+1/2H2O(l),ΔH=-28.7kJ/mol 查看更多

 

題目列表(包括答案和解析)

已知:強(qiáng)酸和強(qiáng)堿在稀溶液中發(fā)生反應(yīng)時(shí)的中和熱為57.3 kJ · mol-1,101 k Pa時(shí)辛烷

的燃燒熱為5518 kJ·mol-1。則下列熱化學(xué)方程式書寫正確的是

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:強(qiáng)酸和強(qiáng)堿在稀溶液中發(fā)生反應(yīng)時(shí)的中和熱為57.3 kJ · mol-1,101 k Pa時(shí)辛烷的燃燒熱為5518 kJ·mol-1。則下列熱化學(xué)方程式書寫正確的是

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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已知強(qiáng)酸和強(qiáng)堿在稀溶液中發(fā)生反應(yīng)時(shí)的中和熱為57.3 kJ/mol,101 kpa時(shí)辛烷的燃燒熱為5518 kJ/mol.則下列熱化學(xué)方程式書寫不正確的是(  )

A.H++OH-=H2O △H ="-57.3" kJ/mol

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

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

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

 

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已知強(qiáng)酸和強(qiáng)堿在稀溶液中發(fā)生反應(yīng)時(shí)的中和熱為57.3 kJ/mol,101 kpa時(shí)辛烷的燃燒熱為5518 kJ/mol.則下列熱化學(xué)方程式書寫不正確的是(  )

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

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已知強(qiáng)酸和強(qiáng)堿在稀溶液中發(fā)生反應(yīng)時(shí)的中和熱為57.3 kJ/mol,101 kpa時(shí)辛烷的燃燒熱為5518 kJ/mol.則下列熱化學(xué)方程式書寫不正確的是(  )

A.H++OH-=H2O △H ="-57.3" kJ/mol

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

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

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

 

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