下列方程式正确的是 请选择ABCD8~;^(w6T.i9w2i9H.M)~1H6^-i3M2U
A.2Fe+3H2SO4===Fe2(SO4)3+3H2↑.M)~1H6^-i3M2U
B.S+O2===SO2.M)~1H6^-i3M2U
C.2H2O22H2O + O2.M)~1H6^-i3M2U
D.CO2+H2O===H2CO3.M)~1H6^-i3M2U