Science, asked by angel1437, 1 year ago

Difference between electrolysis and electrolytic reduction

Answers

Answered by Raghav3333
0
In electrolytic reduction graphite electrodes are used which are of same size. in electrolytic refining the anode is made of the impure metal which is to be purified and the cathode is made from that pure metal. initially the cathode is thick and the anode is very thin. 


b. the electrolyte used in electrolytic refining is the metal sulphate with acid (acid id added to increase the conductivity) which is aqueous in nature. whereas in electrolytic reduction molten chloride form of the solution is used


Raghav3333: Electrolytic refining is used to purify the impure metals by electrolysis. Generally metals like copper , zinc , silver , gold are refined using this method.
on the other hand electrolytic reduction can be useful in metallurgy of highly reactive metal s like Na, K, Ca etc. ores are mostly fused before electrolysis is done .
Raghav3333: pls mar as brainliest
Raghav3333: i have given 2 answers
Answered by payal75
2
1. In electrolytic reduction graphite electrodes whereas in electrolytic refining, the anode is made of the impure metal which is to be purified and the cathode is made from that pure metal. 

2. Electrolyte used in electrolytic refining is the metal sulfate with acid (acid is usually added to increase the conductivity) whereas in electrolytic reduction molten chloride form of the solution is used.

3. In electrolytic refining the impure metal at the anode displaces the metal from the aqueous solution and the these ions go to the cathode and attach to the cathode as they are now pure. Impure metal at the anode directly doesn't go to the cathode, its a indirect process. As the reaction goes on, the size of the anode reduces and finally disappears and the cathode becomes thick as all the impure metal is converted into pure metal. In electrolytic reduction the metal from the molten solution deposits on the cathode and chlorine gas is evolved at the anode.

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