Fe + 2HCl →FeCl2 + H2
0,05----0,1-----0,05----0,05
n Fe=0,05 mol
Vdd HCl=\(\dfrac{0,1}{2}=0,05mol\)
b) VH2=0,05.22,4=1,12l
c) CM FeCl2=\(\dfrac{0,05}{0,05}=1M\)
a)
\(n_{Fe}=\dfrac{2,8}{56}=0,05\left(mol\right)\)
PTHH:
\(Fe+2HCl->FeCl_2+H_2\)
Theo PTHH 1mol 2mol 1mol 1mol
Theo đề 0,05mol 0,1mol 0,05mol 0,05 mol
=> V\(_{HCl}\)= \(\dfrac{0,1}{2}\)=0,05 mol
b)
n\(_{H_2}\)= n\(_{Fe}\) = 0,05 mol
=> V\(_{H_2}\)=0,05 . 22,4 = 1,12 lít
c)
n\(_{FeCl_2}\) = n\(_{Fe}\) = 0,05 mol
=> C\(_{M_{FeCl_2}}\) = \(\dfrac{0,05}{0,05}=1M\)