what is electrolytic decomposition? Give two uses of electrolytic decomposition reaction. Give the balanced equation for electrolytic decomposition of sodium chloride and molten aluminium oxide.

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Solution

Electrolytic decomposition – The decomposition reaction in which a substance is decomposed in to its constituents by use of electricity.
Uses:
1) This reaction is used for the industrial preparation of aluminium, sodium, chlorine etc.
2) This reaction is used in electroplating.

The reactions are as follows:
$N a C l (l) \overset{e l e c t r i c i t y}{\to} N a (l) + 1 / 2 C l_{2} (g) s o d i u m c h l o r i d e 2 A l_{2} O_{3} (l) \overset{e l e c t r i c i t y}{\to} 4 A l (l) + 3 O_{2} (g) A l u m i n i u m o x i d e$

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