In: Chemistry
What will be the degree of dissociation of 0.1 M Mg(NO3)2 solution if van’t Hoff factor is 2.74?
Explanation :
When Mg(NO3)2 it dissociate into Mg 2+ ion and NO3 - ion. Based on the degree of dissociation formula we are able to calculate directly degree of dissociation.
given vant Hoff factor (i) = 2.74
Reaction:
Mg(NO3)2 ⟶ Mg2+ + 2NO3−
Degree of Dissociation
α = (i−1)/(n−1) =(2.74−1)/(3−1) =1.742 = 0.87
% Degree of Dissociation = 0.87(100) = 87%
Degree of disssociation is 87%.