Fe+2HCl----->FeCl2+H2
a) ta có \(n_{Fe}=\frac{2,8}{56}=0,05mol\)
Theo pthh
n\(_{HCl}=2n_{Fe}=0,1mol\)
V=V\(_{HCl}=\frac{0,1}{0,2}\)=0,5(lít) =500ml
Theo pthh
n\(_{H2}=n_{Fe}=0,05mol\)
V\(_{H2\left(đktc\right)}=0,05\times22,4=1,12l\)
b)Theo pthh
n\(_{FeCl2}=n_{Fe}=0,05mol\)
C\(_{M\left(ddA_{ }\right)}=0,05\times0,5=0,025M\)
Fe +2HCl --->FeCl2 +H2
a) ta có
n\(_{Fe}=\frac{2,8}{56}=0,05mol\)
Theo pthh
n\(_{HCl}=2n_{Fe}=0,1mol\)
V\(_{HCl}=\frac{0,1}{0,1}=0,5l=500ml\)
theo pthh
n\(_{H2}=n_{Fe}=0,05mol\)
b)theo pthh
n\(_{FeCl2}=n_{Fe}=0,05mol\)
\(C_{M\left(ddA\right)}=\frac{0,05}{0,5}=0,1\left(M\right)\)
nFe = 2.8/56 = 0.05 mol
Fe + 2HCl --> FeCl2 + H2
0.05__0.1_____0.05___0.05
Vdd HCl = 0.1/ 2 = 0.05 (l)
VH2 = 0.05*22.4 = 1.12 l
CM FeCl2 = 0.05/0.05 = 1M
nFe = 2,8/56 = 0,05 mol
Fe + 2HCl ---> FeCl2 + H2
0,05 0,1 0,05 (mol)
VHCl = \(\frac{0,1}{2}\) = 0,05 l
VH2 = 0,05.22,4 = 1,12 l
b) CM ddA = 0,05/0,05 = 1M