Chemistry - Surface Chemistry Question with Solution | TestHub

(a) Hydrolysis

(i) $2{\mathrm{AuCl}}_3+3\mathrm{HCHO}$ + $3{\mathrm{H}}_2\mathrm{O}\to 2\mathrm{Au}(\mathrm{sol})+3\mathrm{HCOOH}+$ 6HCl

(b) Reduction

(ii)${\mathrm{As}}_2{O}_3+3{\mathrm{H}}_{2}S$

$\to {\mathrm{As}}_2{S}_3(\mathrm{sol})+3{\mathrm{H}}_{2}O$

(c) Oxidation

(iii)$S{O}_2+2{\mathrm{H}}_{2}S$

$\to 3S(\mathrm{sol})+2{\mathrm{H}}_{2}O$

(d) Double Decomposition

(iv) $Fe{\mathrm{Cl}}_3+3{\mathrm{H}}_2\mathrm{O}$

$\to Fe(OH{)}_3\left(sol\right)+3HCl$