Suppose that when two liquids, A and B, are mixed, the totalvolume after mixing

Question

Suppose that when two liquids, A and B, are mixed, the totalvolume after mixing is smaller than the sum of the volumes of thetwo liquids before mixing. What does this imply about theforces acting between A and B molecules? Please answer in detail discussing things like polarity so Ican better understand. Thanks so much! Suppose that when two liquids, A and B, are mixed, the totalvolume after mixing is smaller than the sum of the volumes of thetwo liquids before mixing. What does this imply about theforces acting between A and B molecules? Please answer in detail discussing things like polarity so Ican better understand. Thanks so much!

Explanation / Answer

        The decrease in thevolume after mixing the two liquids shows that they do not form anideal solution. The intermolecular forces between the Amolecules is not same as the intermolecular forces between A andmolecules . Similarly the intermolecular forces between B moleculesis not same as the intermolecular forces between B and Amolecules.          The volumewill be decreased only if the intermolecular forces betweenthe molecules increases afetr mixing , so that they bind themtogether and reduce the volume.          

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