a)PTHH: Fe+2Hcl->FeCl2+H2
b)Ta có nFe=\(\frac{mFe}{MFe}=\frac{5,6}{56}=0,1\left(mol\right)\)
PTHH: Fe+2Hcl->FeCl2+H2
(mol) 0,1 0,2
=>mHcl=nHcl.MHcl
=>mHcl=0,2.36,5
=>mHcl=7,3(g)
Ta có C%Hcl=\(\frac{mHcl}{mddHcl}.100\%\)
=>mddHcl=\(\frac{mHcl.100\%}{C\%Hcl}\)
=>mddhcl=\(\frac{7,3.100}{7,3}=100\left(g\right)\)
c)
PTHH: Fe+2Hcl->FeCl2+H2
(mol) 0,1 0,2 0,1
=>mFeCl2=nFeCl2.MFeCl2
=>mFeCl2=0,1.127
=>mFeCl2=12,7(g)
d)
PTHH: Fe+2Hcl->FeCl2+H2
(mol) 0,1 0,2 0,1 0,1
=>VH2(dktc)=nH2.22,4
=>VH2(dktc)=0,1.22,4
=>VH2(dktc)=2,24(l)