Molecule Type Boiling point (°C)  CH3CH2CH3  Alkane  -42 CH3CHO  Aldehyde +21 CH3CH2OH   Alcohol  +78 i. Why is the boiling point of the aldehyde greater than that of the alkane? ii. Why is the boiling point of alcohol the highest? iii. Explain why the solubility of aldehydes and alcohols falls as the molecules get bigger.

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