Solutions

What role does the molecular interaction play in the solution of alcohol and water ?

Based on solute-solvent interactions, arrange the following in order of increasing solubility in n-octane and explain. Cyclohexane, KCl, CH₃OH, CH₃CN. 

The dissolution of ammonium chloride in water is endothermic process. What is the effect of temperature on its solubility ? 

Define molarity. How it is related with normality ?

What do analogus organs explain as an evedence of organic evolution.

What is van’t Hoff factor? How is it related with :

(a) degree of dissociation 

(b) degree of association

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).  

 Calculate the molarity of pure water (d = 1 g mL^-1).

How molarity is related with percentage and density of solution ?