正確的寫法為:CO2+2OH-=CO+H2OC錯.因不符合客觀實際.應生成Fe2+.正確的寫法為:Fe+2H+=Fe2++H2↑答案: AD 查看更多

 

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25℃、101 kPa下,碳、氫氣、甲烷和葡萄糖的燃燒熱依次是393.5 kJ/mol、285.8 kJ/mol890.3 kJ/mol、2800 kJ/mol,則下列熱化學方程式正確的是

A.C(s)+O2(g)=CO(g)                    △H= ―393.5 kJ/mol

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.C6H12O6(s) +6O2(g)=6CO2(g)+6H2O(l)     △H=―2800 kJ/mol

 

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25℃、101 kPa下,碳、氫氣、甲烷和葡萄糖的燃燒熱依次是393.5 kJ/mol、285.8 kJ/mol

890.3 kJ/mol、2800 kJ/mol,則下列熱化學方程式正確的是

A.C(s)+O2(g)=CO(g)                    △H= ―393.5 kJ/mol

B.2H2O(l)=2H2(g)+O2(g)                △H= +571.6 kJ/mol

C.CH4(g)+2O2(g)=CO2(g)+2H2O(g)          △H= ―890.3 kJ/mol

D.C6H12O6(s) +6O2(g)=6CO2(g)+6H2O(l)     △H= ―2800 kJ/mol

 

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25℃、101 kPa下,碳、氫氣、甲烷和葡萄糖的燃燒熱依次是393.5 kJ/mol、285.8 kJ/mol、890.3 kJ/mol、2800 kJ/mol,則下列熱化學方程式正確的是  (    )

A.C(s)+O2(g)=CO(g)                   △H = ―393.5 kJ/mol

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.C6H12O6(s) +6O2(g)=6CO2(g)+6H2O(l)     △H = ―2800 kJ/mol

 

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25℃、101 kPa下,碳、氫氣、甲烷和葡萄糖的燃燒熱依次是393.5 kJ/mol、285.8 kJ/mol、890.3 kJ/mol、2800 kJ/mol,則下列熱化學方程式正確的是

A.C(s)+O2(g)=CO(g)                     △H= ―393.5 kJ/mol

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.C6H12O6(s) +6O2(g)=6CO2(g)+6H2O(l)     △H= ―2800 kJ/mol

 

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25℃、101 kPa下,碳、氫氣、甲烷和葡萄糖的燃燒熱依次是393.5 kJ/mol、285.8 kJ/mol、890.3 kJ/mol、2800 kJ/mol,則下列熱化學方程式正確的是

A.C(s)+O2(g)=CO(g)                     △H= ―393.5 kJ/mol

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.C6H12O6(s) +6O2(g)=6CO2(g)+6H2O(l)     △H= ―2800 kJ/mol

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