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Homologous Series

is HCHO the f...

Question

is HCHO the first member in the homologous series of aldehyde

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Solution

The general formula for the homologous series of aldehyd is C_nH_2nO
As for first member of aldehyde n is 1, therefore on substituting the value of n in above formula we get CH₂O and the structure of this aldehyde is HCHO.
The IUPAC name of the mentioned aldehyde is methanal and its common name is formaldehyde.

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