Calculate the apparent degree of ionisation of an electrolyte MX 2 in water, if the observed molar mass of the solute by measuring elevation in boiling point is 65.6 (Normal molar mass of the solute

Question

Calculate the apparent degree of ionisation of an electrolyte MX 2 ​ in water, if the observed molar mass of the solute by measuring elevation in boiling point is 65.6 (Normal molar mass of the solute = 164 ).

TestHub · Accepted Answer

M X 2 ​ ⇌ M 2 + + 2 X − ( 1 − α ) α 2 α i = 1 1 + 2 α ​ = 65.6 164 ​ 2 α = 65.6 98.4 ​ ; α = 65.6 49.2 ​ : α = 0.75 the degree of ionization = 75% .

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