根据下面实验内容书写的化学方程式,正确的是( ) A.在空气中

根据下面实验内容书写的化学方程式,正确的是(  )

A.在空气中点燃镁条  Mg+O2MgO

B.铝片放入稀硫酸中  Al+H2SO4═AlSO4+H2

C.氢氧化钠溶液中滴加氯化钡  2NaOH+BaCl2═BaOH2↓+2NaCl

D.碳酸钠溶液中滴加硝酸银  Na2CO3+2AgNO3═Ag2CO3↓+2NaNO3

答案

D

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