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FACTORS AFFECTING CONDUCTIVITY (GRADE 12)


The conductivity of an electrolyte depends on the following factors:

(a) Nature of electrolyte-

(i) Weak or Strong electrolyte- A weak electrolyte furnishes fewer ions therefore it has lower conductivity than a strong electrolyte.

(ii) Valency of the ions- The ions with higher valency carry more charge and therefore they conduct more charge than the ion of lower valency.

(iii) Speed of the ion- The ion which can move faster will carry the charge also faster and therefore has more conducting power.

(b) Temperature- Conductivity of an electrolyte inncreases by 2-3% for each degree rise in temperature.

(c) Concentration- When the solution is diluted the number of ions per cubic centimetre decreases, hence conductivity decreases. 

Conductivity decreases with decrease in concentration both, for weak and strong electrolytes.


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