question_answer 35)

 Suggest the most important type of intermolecular interaction in the following pairs: (i) n-hexane and n-octane (ii) I2 and CCl4 (iii) NaClO4 and water (iv) methanol and acetone  

Answer:

(i) Both are non-polar. Hence, intermolecular interactions in them will be London dispersion forces. (ii) Both are non-polar. Hence, intermolecular interactions in them will be London dispersion forces. (iii) NaClO4 gives Na+ and ClO4– ions in the solution while water is a polar solvent. Thus, ion-dipole interactions are present in them. (iv) Both are polar molecules. Hence, dipole interactions are present in them. (v) Both are polar molecules. Hence, dipole interactions are present in them.