\(n_{Al}=0,2\left(mol\right)\)
\(2Al+6HCl-->2AlCl_3+3H_2\)
0,2......0,6.....................0,2............0,3
\(a=m_{HCl}=0,6.36,5=21,9\left(g\right)\)
\(b=m_{AlCl_3}=0,2.133,5=26,7\left(g\right)\)
\(V=V_{H_2}=0,3.22,4=6,72\left(l\right)\)
a)nAl=m/M=5,4/27=0,2 (mol)
pt: 2Al + 6HCl -> 2AlCl3 +3H2
cứ:: 2.........6............2...........3 (mol)
Vậy: 0,2---->0,6---->0,2----->0,3 (mol)
b) Vậy ta có: a=mHCl=n.M=0,6.36,5=21,9(g)
b=mAlCl3=n.M=0,2.133,5=26,7(g)
V=VH2=n.22,4=0,3.22,4=6,72(lít)
nAl=\(\dfrac{m}{M}=\dfrac{5,4}{27}=0,2\left(mol\right)\)
a, pthh: 2Al + 6HCl \(\rightarrow\) 2AlCl3 + 3H2
0,2 .......0,6...........0,2........0,3 (mol)
b, mHCl=a=n.M=0,6.36,5=21,9(g)
mAlCl3=b=n.M=0,2.133,6=26,7(g)
VH2=n.22,4=0,3.22,4=6,72(l)