Dipole moment of aldehydes `(2.3-2.8, D)`. is much higher than thảt of alcohols `(1.6-1.8 D)`. Explain.

Explanation

In aldehydes, thie carboriy! carbon. is sp. hybridised while in alcohós it is sp . hybridised:
In aldehydes, the carbon-oxygen double bond is polarised due to higher electronegativity of oxygen relative to carbon. The loosely held `pi` . electrons are pulled strongly, towards the oxygen atom. to give oxygen a partial negative charge and.carbon a partial positive charge.
figure
Also due to the high polarity, aldehyde.has the folJowing resonance structures, neotral structure: `(A)` and.dipolar structure (B).as shown below.
fig
`therefore` The dipole moment of aldeliydes `(2.3-2.8 D)` is much higher than that of alcohols `(1.6-1.8 D)`.