a) PTHH: \(Fe+2HCl\rightarrow FeCl_2+H_2\uparrow\)
b) Ta có: \(n_{H_2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)=n_{Fe}\) \(\Rightarrow m_{Fe}=0,2\cdot56=11,2\left(g\right)\)
\(\Rightarrow\%m_{Fe}=\dfrac{11,2}{28}\cdot100\%=40\%\) \(\Rightarrow\%m_{Ag}=60\%\)
a) Fe +2 HCl -> FeCl2 + H2
nH2=0,2(mol)
=> nFe=nH2=0,2(mol)
=>mFe=0,2.56=11,2(g)
b) %mFe=(11,2/28).100=40%
=>%mAg=100% - 40%=60%