Question

starting from hydrochloric acid how would you obtain the following metalic chlorides :

1)soluble in hot water but insoluble in cold.

2)insoluble in hot and cold water3)soluble in cold water4)soluble in NH₄OH bt insoluble in dil. HNO₃5)insoluble in conc. mineral acids but soluble in aqua regia

Answer 1

↵1) Lead chloride
Pb(CH₃COO)₂ (aq) + HCl (aq) $\to$ PbCl₂(s) + 2CH₃COOH(aq)

2) Tin chloride
2HCl + Sn $\to$ SnCl₂ + H₂

3) Sodium chloride
NaOH + HCl $\to$ NaCl + H₂O

4) Silver chloride
It can be prepared from sodium chloride, which is previously prepared from hydrochloric acid.
AgNO₃(aq) + NaCl(aq) $\to$ AgCl(s) + NaNO₃(aq)

5) Hydrometallic chlorides
Metallic chlorides react with HCl to produce hydrometallic chloride
AuCl₃ + HCl $\to$ H⁺[AuCl₄]^-