a) PTHH : \(Fe+2HCl-->FeCl_2+H_2\)
b) \(n_{Fe}=\dfrac{5,6}{56}=0,1\left(mol\right)\)
Theo PTHH : nH2 = nFe = 0,1 (mol)
=> VH2 = \(0,1.22,4=2,24\left(l\right)\)
c) Theo PTHH : \(n_{HCl\left(pu\right)}=2n_{Fe}=0,2\left(mol\right)\)
=> mHCl = 0,2.36,5 = 7,3 (g)