Mg+H2SO4->MgSO4+H2
2Al+3H2SO4->Al2(SO4)3+3H2
Fe+H2SO4->FeSO4+H2
Zn+H2SO4->ZnSO4+H2
m muối=m kim loại+m gốc axit
7.48=1.72+mSO4/H2SO4
mSO4=5.76(g)
nSO4/H2SO4=0.06(mol)
->nH2SO4=0.06(mol)
Theo pthh 1 2 3 4
nH2SO4:nH2=1
->nH2SO4=nH2->nH2=0.06(mol)
V=0.06*22.4=1.344
Mg+H2SO4->MgSO4+H2
2Al+3H2SO4->Al2(SO4)3+3H2
Fe+H2SO4->FeSO4+H2
Zn+H2SO4->ZnSO4+H2
m muối=m kim loại+m gốc axit
7.48=1.72+mSO4/H2SO4
mSO4=5.76(g)
nSO4/H2SO4=0.06(mol)
->nH2SO4=0.06(mol)
Theo pthh 1 2 3 4 nH2SO4:nH2=1
->nH2SO4=nH2->nH2=0.06(mol)
V=0.06*22.4=1.344