A) Water - Nitric acid
B) Benzene - Methanol
C) Water-Hydrochloric acid
D) Acetone - Chloroform
Correct Answer: B
Solution :
[b] Positive deviations are shown by such solutions in which solvent-solvent and solute-solute interactions are stronger than becomes weaker. Therefore their escaping tendency increases which results in the increase in their partial vapour pressures. In pure methanol there exists intermolecular H-bonding. On adding benzene, its molecules come between methanol molecules there by breaking H-bonds which weaken intermolecular forces. This results in increase in vapour pressure.You need to login to perform this action.
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