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ICSE Class 10 Answered

what are the electrolysis parameter for electroplating platinum on any other metallic plate.parameter such as current ,voltage and prefferable  electrolyte solution.
Asked by gupta.eshan73 | 20 Feb, 2020, 12:37: PM
Expert Answer

Electroplating with Silver

Electrolyte: Na[Ag(CN)2] or K[Ag(CN)2]

 

Dissociation: Na[Ag(CN)2] rightwards arrow over leftwards arrow with blank on top  Na+ + Ag+ + 2CN

                                 H2O  rightwards arrow over leftwards arrow with blank on top  H+ + OH

Electrodes:

Cathode: Copper bell

Anode: Pure silver

Electrodes reactions:

Reaction at cathode: Ag+ + e→ Ag (deposited)

Reaction at anode:    Ag − e→ Ag+ (goes into solution)

 

Answered by Ramandeep | 20 Feb, 2020, 06:09: PM
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