Question

câu 3 và 4 ạ

Answer 1

Câu 3:

Ta có: \(n_{Al}=\dfrac{2,7}{27}=0,1\left(mol\right)\)

a, PT: \(2Al+6HCl\rightarrow2AlCl_3+3H_2\)

_____0,1____________0,1____0,15 (mol)

b, \(m_{AlCl_3}=0,1.133,5=13,35\left(g\right)\)

c, \(V_{H_2}=0,15.22,4=3,36\left(l\right)\)

Câu 4:

Ta có: \(n_{Zn}=\dfrac{6,5}{65}=0,1\left(mol\right)\)

a, PT: \(Zn+2HCl\rightarrow ZnCl_2+H_2\)

___0,1___________0,1____0,1 (mol)

b, \(m_{ZnCl_2}=0,1.136=13,6\left(g\right)\)

c, \(V_{H_2}=0,1.22,4=2,24\left(l\right)\)

Bạn tham khảo nhé!