An aqueous solution of hydrochloric acid:

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(B) An aqueous solution of $HCl$ shows a negative deviation from Raoult's law. In this solution,the intermolecular forces of attraction between the so

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Shows negative deviation from Raoult's law

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(B) An aqueous solution of $HCl$ shows a negative deviation from Raoult's law. In this solution,the intermolecular forces of attraction between the solute $(HCl)$ and solvent $(H_2O)$ molecules are stronger than the forces between the pure components. This stronger attraction reduces the escaping tendency of the molecules into the vapour phase. Consequently,the observed partial vapour pressure is lower than the value predicted by Raoult's law,which is the characteristic definition of a negative deviation.

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