Question

What is produced at each electrode in the electrolysis of nabr(aq)?

Answer 1

The product    at each  electrode  in the  electrolysis  of NaBr   is  as follows

At  the  anode  is    bromine

that is  Br^-  (aq)  = Br2(aq) +  2e-
at the  catode  is  sodium

that is Na^+(aq)  +2e-  =  Na(s)

Bromine is  produced  at  the  anode  since  the  standard  potential  of bromide oxidation  is  less  positive than that  of oxidation  of water.

Answer 2

The product at each electrode in the electrolysis of NaBr(aq) are as follows

• At  Anode : Br₂
• At  Cathode : H₂
• Not produced : O₂, Na

Electrolysis

Electrolysis is the passage of electricity through a compound to effect a chemical change

The chemical reaction of the electrolysis of NaBr

NaBr(aq) -----> Na⁺ + Br⁻

H₂O ------> H⁺ + OH⁻

Hence we can conclude that the The product at each electrode in the electrolysis of NaBr(aq) are as follows

At  Anode : Br₂ At  Cathode : H₂ ,Not produced : O₂, Na

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