Trong phản ứng $\displaystyle \text{C}{{\text{r}}_{\text{2}}}{{\text{O}}_{\text{7}}}^{\text{2-}}\text{ }\!\!~\!\!\text{ + }\!\!~\!\!\text{ S}{{\text{O}}_{\text{3}}}^{\text{2-}}\text{ }\!\!~\!\!\text{ + }\!\!~\!\!\text{ }{{\text{H}}^{\text{+ }\!\!~\!\!\text{ }}}\text{ }\!\!~\!\!\text{ }\xrightarrow{{}}\text{ }\!\!~\!\!\text{ }\!\!~\!\!\text{ C}{{\text{r}}^{\text{3+}}}\text{ }\!\!~\!\!\text{ + X }\!\!~\!\!\text{ + }\!\!~\!\!\text{ }{{\text{H}}_{\text{2}}}\text{O}$. X là
A. SO2
B. S
C. H2S
D. SO42-
A. SO2
B. S
C. H2S
D. SO42-
Loga
Hóa Học lớp 12
