Question

The dissociation or ionisation of a weak electrolyte is suppressed by the addition of strong electrolyte containing one of the same ions of the weak electrolyte is known as

Answer 1

common ion effect

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Answer 2

Common-ion effect is defined the process in which dissociation/ionization of W.E(weak electrolyte) is decreased by adding S.E(strong electrolyte) having common(same) ions.

Explanation:

• The weak electrolytes(W.E), dissociates into ions very slowly(sparingly) whereas the strong electrolytes(S.E) dissociates very fast(rapidly).
• The reaction does not go forward when a common ion is present in solution.
• This process is known as common-ion effect.
• It is explained as- when the conc. of an ion increases in the solution , the addition of an entity having same ion increases the degree of association(α) of ions.