FE+2HCl->Fecl2+H2
0,1----0,2----0,1
n Fe=0,1 mol
=>m Fecl2=0,1.127=12,7g
=>C% =\(\dfrac{0,2.36,5}{100}100\)=7,3%
a) \(n_{Fe}=\dfrac{5,6}{56}=0,1\left(mol\right)\)
PTHH: Fe + 2HCl --> FeCl2 + H2
0,1--->0,2----->0,1--->0,1
=> mFeCl2 = 0,1.127 = 12,7 (g)
b) mHCl = 0,2.36,5 = 7,3 (g)
=> \(C\%=\dfrac{7,3}{100}.100\%=7,3\%\)
\(n_{Fe}=\dfrac{5,6}{56}=0,1\left(mol\right)\\
pthh:Fe+2HCl\rightarrow FeCl_2+H_2\)
0,1 0,2 0,1
\(m_{FeCl_2}=127.0,1=12,7g\\
C\%_{HCl}=\dfrac{0,2.36,5}{100}.100\%=7,3\%\)