. Suggest the most important type of intermolecular attractive interaction in the following pairs.


Suggest the most important type of intermolecular attractive interaction in the following pairs.

            (i) n-hexane and n-octane

            (ii) I2 and CCl4

            (iii) NaClO4 and water

            (iv) methanol and acetone

            (v) acetonitrile (CH3CN) and acetone (C3H6O).

Hint :   Recal different types of intermolecular forces. London’s forces exist between the non-polar molecules, ionic interactions are found in ionic compound and dipole interactions are found in polar compounds. – OH, - NH or HF bond if present, the molecule can form H-bond.

 

Best Answer

  (i)  London’s forces

  (ii)  London’s forces

  (iii) Ion-dipole interactions

   (iv) Intermolecular hydrogen bonding

    (v)        Dipole-dipole interactions 

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