why melting point of even no. of carboxylic acid is greater tha odd no. of carboxylic acid
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Answer:Unbranched acids made up of an even number of carbon atoms have melting points higher than the odd numbered homologs having one more or one less carbon. This reflects differences in intermolecular attractive forces in the crystalline state.
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Acids with even number of C-atoms are symmetrical so they are tightly packed and they need more temperature to change their state i.e. they have higher melting point. Like alkanes,carboxylic acids cantaining even number of carbon atoms show higher melting point than the adjacent acids having odd number of carbon atoms.
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