Define degree of Ionisation. Explain the factors affecting degree of Ionisation.

Define degree of Ionisation. Explain the factors affecting degree of Ionisation. 
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Degree of Ionization: - The fraction of the total number of molecules of an electrolyte that ionizes in solution called the degree of ionization. 

Factors Affecting Degree Ionization:- 

1. Nature of solute- The compounds like strong acids, bases & salts have high degree of ionization as they are highly ionised in the solution.e.g.HCl, HNO3(Strong acids), Strong bases(NaOH, KOH) & strong salts (Nacl, KCl)etc.while the weak acids & weak bases have low degree of ionization as they are feebly ionized in solution. 

2. Nature of Solvent- The effect of solvent is due to high dielectric constant.The polar solvents like water & ammonia tends to separate the ions & they act as strong ionizing solvent. The Non-polar solvents like CS2 & benzene have no tendency to separate the ions. 

3. Concentration of the solution- Degree of Ionisation is inversely propotional to concentration. As concentration increases, degree of ionization decreases & vice a versa. 

4. Temperature of solution- Degree of Ionisation is directly proportional to temperature. As temperature increases, degree of ionization increases.
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