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Ratling [72]
3 years ago
12

In electrolysis, why do we keep the electrodes the same?

Chemistry
1 answer:
zvonat [6]3 years ago
4 0
If the electrolyte contains chemical species that will be reduced at the cathode or oxidized at the anode (or both), that means chemical change.  The electrolyte can form one or more compounds or ionic species that weren't there before.   
<span> A given species could form at one </span>electrode<span> but diffuse back over to the other electrode where it promptly breaks back up into its reactants. </span>

<span>If the electrolyte does not participate in any reaction(s), it will just act as a conductor of electricity.  The same goes for the electrodes.  Some materials will react but will not produce anything obvious (gases, precipitates, or color changes).  Others will not react at all under the specific combinations of voltage and current. </span>
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Which of the following requires an oxidizing agent?
laila [671]
Correct Answer: First Option

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From the given options we have to find in which of them electrons are being removed. When the electrons are removed, the number of protons in the atom will be more than the number of electrons. As a result the net charge on the atom will be positive. 

First option lists such a change. Initially charge on Al is neutral, 3 electrons are removed and it get +3 charge. This shows that Al is being oxidized, so it needs an oxidizing agent.
3 0
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