Question

(b) From the list of substances given below, choose the pair required to prepare the salts (i) to (iii) in the laboratory and write down the relevant equations. The substances are
chlorine, iron, lead, lead nitrate solution, sodium nitrate solution, iron (III) carbonate, lead carbonate, iron (III) hydroxide, sodium hydroxide solution and dilute hydrochloric acid. The salts are
(i) sodium chloride.
(ii) lead chloride.
(iii) anhydrous iron (III) chloride.

Answer 1

1. Sodium hydroxide solution reacts with dilute hydrochloric acid to produce sodium chloride. The equation is as follows:
   $\mathrm{NaOH}+\mathrm{HCl}\to \mathrm{NaCl}+{\mathrm{H}}_2\mathrm{O}$

2. Lead carbonate reacts with dilute hydrochloric acid to form lead chloride. The equation is as follows:${\mathrm{PbCO}}_3+2\mathrm{HCl}\to {\mathrm{PbCl}}_2+{\mathrm{CO}}_2+{\mathrm{H}}_2\mathrm{O}$

3. Iron reacts with chlorine to yield anhydrous iron chloride. The equation is as follows: $2\mathrm{Fe}+3{\mathrm{Cl}}_2\to 2{\mathrm{FeCl}}_3$