arrange these molecules based on increasing polarity. water, ethanol, propanone and ethyl acetate.
arrange these molecules based on increasing polarity. water, ethanol, propanone and ethyl acetate.
Homework Answers
Solution:
Order of polarity is as follows:
Ethyl acetate < Propanone < Ethanol < Water
Polarity of a molecule depends upon the electronegativity difference of the constituent atoms.
Water is highly polar because OH group is attached with H atom. It has strong capability to form hydrogen bonding.
Ethanol is less polar than water because in ethanol OH group is attached with organic ethyl (C2H5) group.
Propanone (acetone) has a keto group. The hydrogen atom on the hydroxyl group is more polarized by the oxygen than the hydrogens on the carbon atoms in acetone are by the keto group. Thus, propanone bears less polarity than ethanol.
Ethyl acetate is less polar due to presence of ester linkages.
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