Chemistry - Complete P-block Question with Solution | TestHub

Sodium thiosulphate, ${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3$ gets oxidised by chlorine water. $${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3+4{\mathrm{Cl}}_2+5{\mathrm{H}}_2\mathrm{O}⟶2{\mathrm{NaHSO}}_4+8\mathrm{HCl}$$ ${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3$ gets oxidised by ${\mathrm{FeCl}}_3$ into ${\mathrm{Na}}_2{\mathrm{S}}_4{\mathrm{O}}_6$ $$2{\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3+2{\mathrm{FeCl}}_3⟶{\mathrm{Na}}_2{\mathrm{S}}_4{\mathrm{O}}_6+2{\mathrm{FeCl}}_2+2\mathrm{NaCl}$$ Further, ${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3$ decomposes on treatment with dilute acids $${\mathrm{Na}}_2{\mathrm{S}}_2{\mathrm{O}}_3+2\mathrm{HCl}⟶2\mathrm{NaCl}+{\mathrm{SO}}_2+\mathrm{S}+{\mathrm{H}}_2\mathrm{O}$$