Cho sơ đồ sau:
$\displaystyle \begin{array}{l}\left( {1} \right){ MC}{{{O}}_{{3}}}{ }\!\!~~\!\!{ }\xrightarrow{{{{t}}^{{o}}}\,{cao}}{ }\!\!~~\!\!{ MO + C}{{{O}}_{{2}}}{;}\\\left( {2} \right){MO + }{{{H}}_{{2}}}{O }\!\!~~\!\!{ }\xrightarrow{{}}{M}{{\left( {OH} \right)}_{{2}}}{.}\\\left( {3} \right){M}{{\left( {OH} \right)}_{{2}}}{ }\!\!~~\!\!{ + Ba}{{\left( {HC}{{{O}}_{{3}}} \right)}_{{2}}}{ }\!\!~~\!\!{ }\!\!~~\!\!{ }\xrightarrow{{}}{MC}{{{O}}_{{3}}}{ }\!\!~~\!\!{ + BaC}{{{O}}_{{3}}}{ }\!\!~~\!\!{ + 2}{{{H}}_{{2}}}{O}{.}\end{array}$
Vậy MCO3 có thể là chất nào sau đây?
A. FeCO3.
B. MgCO3.
C. Na2CO3.
D. CaCO3.
Loga
Hóa Học lớp 12
