a) 2Al + 6HCl --> 2AlCl3 + 3H2
b) \(n_{Al}=\dfrac{5,4}{27}=0,2\left(mol\right)\)
PTHH: 2Al + 6HCl --> 2AlCl3 + 3H2
0,2-------------->0,2----->0,3
=> mAlCl3 = 0,2.133,5 = 26,7 (g)
c) VH2 = 0,3.22,4 = 6,72 (l)
d)
\(n_{CuO}=\dfrac{32}{80}=0,4\left(mol\right)\)
PTHH: CuO + H2 --to--> Cu + H2O
Xét tỉ lệ: \(\dfrac{0,4}{1}>\dfrac{0,3}{1}\) => H2 hết, CuO dư
PTHH: CuO + H2 --to--> Cu + H2O
0,3------>0,3
=> mCu = 0,3.64 = 19,2 (g)
a) 2Al + 6HCl --to--> 2AlCl3 + 3H2
b) nAl = m:M=5,4:27= 0,2(mol)
theo pthh , nAlCl3 = nAl= 0,2(mol)
=> mAlCl3=n.M=0,2. (27+35,5.3)=26,7(g)