In the extraction of metal by the process of electrolysis at which electrode does the following reaction occur ?
M+ + e− ⇌ M (M = Metal)
Is it an oxidation or a reduction reaction? Answer with reason.
OR
Mention one use of aluminium. Why acidic foods should not be kept in an aluminium container?
WBBSE
Class X
Physical Science
Electrolysis
Metallurgy
02 Mark
2023
The reaction occurs at the cathode during the process of electrolysis.
This is a reduction reaction because it involves the gain of electrons.
OR
One use of aluminium: It is used in making utensils, foils, and lightweight vehicle parts.
Aluminium reacts with acids present in food (like citric acid, acetic acid, etc.), forming aluminium salts, some of which are toxic and can contaminate the food.
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