a.
Ta có:
→VHCl=n\CM=0,12=0,05l
b.
nH2=nFe=0,05mol
→VH2=0,05.22,4=1,12l
c.
nFeCl2=nFe=0,05mol
a) \(n_{Fe}=\dfrac{2,8}{56}=0,05\left(mol\right)\)
PTHH: Fe + 2HCl → FeCl2 + H2
Mol: 0,05 0,1 0,05 0,05
b) \(V_{ddHCl}=\dfrac{0,1}{2}=0,05\left(l\right)=50\left(ml\right)\)
c) \(V_{H_2}=0,05.24,79=1,2395\left(l\right)\)
d) \(C_{M_{ddFeCl_2}}=\dfrac{0,05}{0,05}=1M\)