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Entropy

Which one of ...

Question

Which one of the following has higher rate of evaporation arrange them in ascending order-
ethyl alcohol ,diethyl ether , water, glycerol
Also give the reasons for that

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Solution

Rate of evaporation depends upon the magnitude of hydrogen bonding and surface area.
Diethyl ether has maximum surface area and hence has highest rate of evaporation followed by ethyl alcohol. Also ethyl alcohol forms one hydrogen bond.

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STATEMENT-1 : Diethyl ether when boiled with water gives ethyl alcohol.
STATEMENT-2 : Diethyl ether is less dense than water.

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