a+b)
nAl=5,4:27=0,2(mol)
nHCl=10,95:36,5=0,3(mol)
2Al+6HCl->2AlCl3+3H2
..........0,3...................0,15...(mol)
Ta có:\(\dfrac{n_{Al}}{2}>\dfrac{n_{HCl}}{6}\)(0,1>0,05)=>Al dư,HCl hết.Tính theo HCl
Theo PTHH:\(V_{H_2}\)=0,15.22,4=3,36l
PTHH: 2Al + 6HCl ----> 2AlCl3 + 3H2\(\uparrow\)
nAl = \(\dfrac{5,4}{27}=0,2\left(mol\right)\)
n\(HCl\) = \(\dfrac{10,95}{36,5}=0,3\left(mol\right)\)
Ta có tỉ lệ: \(\dfrac{0,2}{2}>\dfrac{0,3}{6}\) => Al dư, HCl phản ứng hết (tính theo HCl)
Theo PTHH: n\(H_2\) = \(\dfrac{3}{6}\)nHCl = \(\dfrac{3}{6}.0,3=0,15\left(mol\right)\)
=> V\(H_2\) = 0,15.22,4 = 3,36 (lít)