下列化学方程式书写正确的是                         

下列化学方程式书写正确的是                            

A.硫在空气中燃烧:  S+ O2SO2

B.铁与稀硫酸反应: 2 Fe + 3 H2SO4===Fe2(SO4)3 +3 H2

C.乙醇在空气中燃烧: C2H5OH + 3O22CO2↑ + 3H2O      

D.木炭与氧化铜在高温下反应:  CuO + CCu + CO2

 

答案

A

解析:略

 

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