Nametheprocessesfromwhichchlorineisobtained asabye-product. Whatwill happenif an aqueoussolution ofNaCl issubjectedto electrolysis ?

Nametheprocessesfromwhichchlorineisobtained asabye-product. Whatwill h

1.	Nametheprocessesfromwhichchlorineisobtained asabye-product. Whatwill happenif an aqueoussolution ofNaCl issubjectedto electrolysis ?
Answer» SOLUTION :SodiummetalispreparedbyDown'sprocess.Itinvolves theelectrolysisofafusedmixtureofNaCland` CaCl_ 2`at 873 K.Duringelectrolysis, sodiumisdischarged at thecathodewhile` Cl _ 2 `isobtained at theanodeasabye-product. ` "" NaCl(l)overset ("Electrolysis")to Na^(+) ("MELT ") + Cl^( - )("melt" )` Atcathode :`Na^(+) ("melt" )+e ^(- )TONA (s) ` At anode:` "" Cl^( -)("melt") toCl(g) +e ^( - ) , 2Cl (g) toCl_ 2 (g)` If, however, an AQUEOUS solutionofNaCl iselectrolysed, `H_2 `isevolved atthe cathodewhile` Cl_ 2 `isobtainedattheanode.Thereasonbeingthatthe`E^(@) `of`Na^(+)//Na` redox coupleis much LOWER ` (E^(@) =- 271V) `thanthatof` H_2O(E^(@)""_(H_2 O // H_2) =- 083 V) `andhencewaterisreducedto` H_ 2 `in preferenceto`Na^(+) `ions. NaOH is, however,obtainedin thesolution. `"" NaCl (aq) overset ("Electrolysis") toNa^(+) (aq) +Cl^(- ) (aq)` At anode :`Cl^( - ) (aq) toCl (g) +e ^(-),2 Cl (g) toCl_ 2 (g)` At cathode :`2 H_2O(l) +2 e^( - ) toH_ 2 (g) +2 OH^(- ) (aq) `