ChemistryMixture(s) showing positive deviation from Raoult’s law at 35°C is (are)

Mixture(s) showing positive deviation from Raoult’s law at 35°C is (are)

  1. A

    carbon tetrachloride+methanol

  2. B

    carbon disulphide+acetone

  3. C

    benzene+toluene

  4. D

    phenol+aniline 

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    Solution:

    (A) CCl4​+CH3​OH⇒ Positive deviation from Raoult's law.

    Here, H- bonding in methanol is broken by CCl4.

    (B) Mixing of polar and non-polar liquids will produce a solution of weaker interaction, resulting in positive deviation for the mixture of carbon disulphide and acetone.

    (C) C6​H6​+C7​H8​⇒ Ideal solution.

    (D) Stronger H-bonding is formed in the mixture oof phenol and aniline, leading to negative deviation.

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