\(a,n_{HCl}=0,1.1=0,1\left(mol\right)\\ n_{Fe}=\dfrac{5,6}{56}=0,1\left(mol\right)\)
PTHH: Fe + 2HCl ---> FeCl2 + H2
LTL: \(0,1>\dfrac{0,1}{2}\) => Fe dư
Theo pthh: \(n_{H_2}=n_{FeCl_2}=n_{Fe\left(pư\right)}=\dfrac{1}{2}n_{HCl}=\dfrac{1}{2}.0,1=0,05\left(mol\right)\)
=> VH2 = 0,05.22,4 = 1,12 (l)
b, Chất dư là Fe
mFe (dư) = (0,1 - 0,05).56 = 2,8 (g)
c, \(C_{M\left(FeCl_2\right)}=\dfrac{0,05}{0,1}=0,5M\)