Question

Answer 1

Câu 1:

a: \(Al_2O_3+6HCl\) →\(2AlCl_3+3H_2O\)

b: \(CuSO_4+Zn\) →\(ZnSO_4+Cu\)

c: \(NaCl+AgNO_3\) →\(NaNO_3+AgCl\) ↓

d: \(Fe\left(OH\right)_3+3HCl\) →\(FeCl_3+3H_2O\)

Câu 3:

a: \(Zn+2HCl\) →\(ZnCl_2+H_2\) ↑

b: \(n_{\left(H_2\right)}=n_{Zn}=0,2\left(mol\right)\)

=>\(n_{HCl}=2\cdot0,2=0,4\left(mol\right)\)

\(V=0,2\cdot22,4=4,48\left(l\right)\)

c: \(C_{M}=\frac{n}{v}=\frac{0.4}{0.2}=2\left(M\right)\)