Zn+Cl2---->.ZnCl2
x------x
2Fe+3Cl2---->2FeCl3
y-----1,5y
n Cl2=8,96/22,4=0,4(mol)
Theo bài ta có hpt
\(\left\{{}\begin{matrix}65x+56y=17,7\\x+1,5y=0,4\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}x=0,1\\y=0,2\end{matrix}\right.\)
%m Zn=\(\frac{0,1.65}{17,7}.100\%=36,7\%\)
%m Fe=100% - 36,7% = 63,3%
Chúc bạn học tôt
Zn+Cl2---->.ZnCl2
x------x mol
2Fe+3Cl2---->2FeCl3
y-----1,5y mol
n Cl2=8,96/22,4=0,4(mol)
ta có hpt
{65x+56y=17,7
x+1,5y=0,4
⇒{x=0,1
y=0,2
=>%m Zn=0,1.6517,7.100%=36,7%
=>%m Fe=100% - 36,7% = 63,3%