nAl= =0.25 mol
2Al + 6HCl --> 2AlCl3 + 3H2
Từ PTHH:
nAlCl3= 0.25 mol
mAlCl3= 33.375 mol
nH2= 0.375 mol
VH2= 8.4l
nAl = \(\frac{6.75}{27}=0.25\) (mol)
PTHH: 2Al+ 6HCl→ 2AlCl3 + 3H2
Theo PTHH, ta có: nAlCl3 = nAl = 0,25 (mol)
⇒mAlCl3 = 0,25 . 133,5 = 33,375 (mol)
Theo PTHH, ta có: nH2 =\(\frac{3}{2}\) nAl = \(\frac{3}{2}\).0,25 = 0,375 (mol)
⇒VH2 = 0,375.22,4 = 8,4 (l)