a) Fe2O3+6HCl--->2FeCl3+3H2O
x---------------------------2x(mol)
MgO+2HCl-->MgCl2+H2O
y-----------------y(mol)
b) Gọi n Fe2O3=x, n MgO=y
theo bài ra ta có hpt
\(\left\{{}\begin{matrix}160x+40y=16\\325x+95y=35,32\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}x=0,05\\y=0,2\end{matrix}\right.\)
%m Fe2O3=0,05.160/16.100%=50%
%m MgO=100-50=50%
a) Fe2O3+6HCl--->2FeCl3+3H2O
x---------------------------2x(mol)
MgO+2HCl-->MgCl2+H2O
y-----------------y(mol)
b) Gọi n Fe2O3=x, n MgO=y theo bài ra ta có :
{ 160x + 40y = 16 325x + 95y = 35, 32
{ x = 0, 05 y = 0, 2
%mFe2o3=0,05.160/16.100%=50%
%mMgO=100-50=50%