\(n_{Fe}=\dfrac{6,5}{65}=0,1\left(mol\right)\)
PT :
\(Zn+2HCl\rightarrow ZnCl_2+H_2\uparrow\)
0,1 0,2 0,1 0,1
\(a,V_{H_2}=0,1.22,4=2,24\left(l\right)\)
\(b,m_{HCl}=0,2.36,5=7,3\left(g\right)\)
\(C\%=\dfrac{7,3}{73}.100\%=10\%\)
\(c,m_{ddZnCl_2}=6,5+73-\left(0,1.2\right)79,3\left(g\right)\)
\(m_{ZnCl_2}=0,1.136=13,6\left(g\right)\)
\(C\%_{ZnCl_2}=\dfrac{13,6}{79,3}.100\%=17,15\%\)
\(Zn+2HCl\rightarrow ZnCl_2+H_2\uparrow\)
0,1 2
Vì 0,1/1<2/2
nên tính theo Zn
=>\(n_{H_2}=n_{Zn}=0.1\left(mol\right)\) và nHCl=0,2(mol)
\(V=0.1\cdot22.4=2.24\left(lít\right)\)
\(C\%\left(muối\right)=\dfrac{0.1\cdot136}{6.5+73-0.2}\simeq17,15\%\)
