How chlorine is prepared in the laboratory? How does it reacts with the following?
a) Iron b) acidified FeSo₄ c) Iodine d) H₂S e) Na₂S₂O₃

Preparation:
1) Oxidation of HCl with MnO₂
$4\mathrm{HCl}+{\mathrm{MnO}}_2\to {\mathrm{MnCl}}_2+2{\mathrm{H}}_2\mathrm{O}+{\mathrm{Cl}}_2\uparrow$
2) Oxidation of HCl with KMnO₄
$16\mathrm{HCl}+2{\mathrm{KMnO}}_4\to 2{\mathrm{MnCl}}_2+8{\mathrm{H}}_2\mathrm{O}+5{\mathrm{Cl}}_2+2\mathrm{KCl}$
3) Deacon’s process:- Oxidation of HCl gives Cl₂
$4\mathrm{HCl}+{\mathrm{O}}_2\stackrel{{\mathrm{CuCl}}_2}{\to }2{\mathrm{Cl}}_2+2{\mathrm{H}}_2\mathrm{O}$
Reactions :
a) Iron (Fe) : Cl₂ reacts with Iron to give Ferric chloride
$2\mathrm{Fe}+3{\mathrm{Cl}}_2\stackrel{ }{\to }2{\mathrm{FeCl}}_3$
b) Acidifid FeSO₄ : Cl₂ reacts with acidified FeSO₄ gives ferric sulphate
$2{\mathrm{FeSO}}_4+{\mathrm{Cl}}_2+{\mathrm{H}}_2{\mathrm{SO}}_4\stackrel{ }{\to }{\mathrm{Fe}}_2{\left({\mathrm{SO}}_4\right)}_3+2\mathrm{HCl}$
c) Iodine: Cl₂ reacts with iodine give iodic acid
${\mathrm{I}}_2+6{\mathrm{H}}_2\mathrm{O}+5{\mathrm{Cl}}_2\stackrel{ }{\to }2{\mathrm{HIO}}_3+10\mathrm{HCl}$
d) H₂S : Cl₂ reacts with H₂S to give HCl and sulphur
${\mathrm{H}}_2\mathrm{S}+{\mathrm{Cl}}_2\stackrel{ }{\to }2\mathrm{HCl}+\mathrm{S}$
e) Na₂S₂O₃ : Cl₂ reacts with Na₂S₂O₃ to give HCl and sulphur and Na₂SO₄
${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3+{\mathrm{Cl}}_2+{\mathrm{H}}_2\mathrm{O}\stackrel{ }{\to }{\mathrm{Na}}_2{\mathrm{SO}}_4+\mathrm{S}+2\mathrm{HCl}$