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define strong and weak electrolytes. write thefactors on which degree of ionisation depends.
Asked by monjittaye16 | 23 Apr, 2020, 05:10: PM
answered-by-expert Expert Answer

Strong electrolytes:

Compounds which in their aqueous solution or in the fused state are almost completely ionised are called strong electrolytes.

Examples: Mineral acids, alkalis and salts

Weak electrolytes:
 

Compounds which in their fused state or aqueous solution are feebly ionised and are poor conductors of electricity are called weak electrolytes.

Examples: Acetic acid, oxalic acid

Factors affecting degree of dissociation:
 
  • Nature of solute: Strong electrolytes have degree of dissociation near 1 and weak electrolytes have degree of dissociation less than 1.
  • Nature of solvent: Solvent with high dielectric constant shows higher degree of dissociation.
  • Dilution: Degree of dissociation increases with dilution of solution.
  • Temperature: Degree of dissociation increases with an increase in temperature.
  • Addition of other species: Addition of another solute having an ion common to that of a weak electrolyte shows a decrease in the degree of dissociation of the weak electrolyte.
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