(i) Define mole fraction.
(ii) Differentiate between ideal solution and non-ideal solution.

Explanation

(i) Mole fraction of a component is the ratio of number of moles of the component to the total number of moles of all components present in the solution.
` "Mole fraction"=("Total Number of moles of component")/("Total number of moles of all components present in the solution")`
(ii)