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When ethanol is heated at 170^(@)C with ...

When ethanol is heated at `170^(@)C` with conc. `H_(2)SO_(4)`, it forms an organic compound 'A' and water. The compound 'A' reacts with hydrogen in the presence of nickel to form 'B'.
ii.Identify the homologous series to which A and B belongs.

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Compound A (ethene) belongs to the homologous series of alkenes.
Compound B (ethane) belongs to the homologous series of alkanes.
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