(b) molarity and
(c) mole fraction
of KI if the density of (mass/mass) aqueous KI is .
If we assume our solution is 100 g. Then according to question, 20 g KI is present and 80 g is water.
So moles of KI :
(a) Molality :-
(b) Molarity :-
(c) Mol fraction :- Moles of water :-
So, mol fraction of KI :-