write the physical properties of aldehyde
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The polarity of the carbonyl group notably affects the physical properties of melting point and boiling point, solubility, and dipole moment. ... Aldehydes with fewer than about five carbon atoms are soluble in water; however, above this number, the hydrocarbon portion of their molecules makes them insoluble.
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Physical properties of Aldehydes :
- Methanol(HCHO) is a gas at room temperature, and its 40% aqueous solution known as Formalin.
- Ethanol(CH3CHO) is a volatile liquid. Other aldehydes and ketones are liquid or solid at room temperature.
- The boiling point of aldehyde is higher than hydrocarbons and ethers of comparable molecular mass due to high magnitude.
- Aldehydes have lower boiling point than those of alcohols of similar molecular masses due to absence of intermolecular hydrogen bonding
- The lower members of aldehydes are miscible with water due to formation of hydrogen bond with water.
- Acetophenone is a hypnotic used as a medicine under the name hypnone.
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