Question
Asked Nov 6, 2019
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11.27 Ethylene glycol (HOCH2CH2OH), the major substance in
antifreeze, has a normal boiling point of 198°C. By
comparison, ethyl alcohol (CH3CH2OH) boils at 78 °C
at atmospheric pressure. Ethylene glycol dimethyl ether
(CH3OCH2CH2OCH3) has a normal boiling point of 83 °C,
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11.27 Ethylene glycol (HOCH2CH2OH), the major substance in antifreeze, has a normal boiling point of 198°C. By comparison, ethyl alcohol (CH3CH2OH) boils at 78 °C at atmospheric pressure. Ethylene glycol dimethyl ether (CH3OCH2CH2OCH3) has a normal boiling point of 83 °C,

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Expert Answer

Step 1

The boiling point of a given liquid can be defined as the temperature at which the vapor pressure of the liquid becomes equal to that of the pressure which surrounds that liquid and the liquid changes to vapor phase.

Step 2

If the intermolecular forces which are present between the molecules of the liquid are strong, the molecules will not easily leave the liquid phase and therefore, the vapor pressure will be reduced and as a result of which the boiling point of the liquid will be higher. On the other hand, if the intermolecular forces that are present between the molecules of the liquid are weak, then the molecules will tend to leave the liquid phase and enter the vapor phase due to which such liquids have lower value of boiling points.

Step 3

The dipole-dipole interactions are caused when two dipolar molecules interact with each other throughout the space. When such type of interaction take plac...

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