Difference between ideal and non ideal solution ? Ideal solution /non ideal solution .[i]obey raults law over entire concentration ie pa =p�aH�A.(ii)∆mix=o.∆mixV=0. (iii)Does not form azerotorps. Non ideal solution=(i)does not obey roults law over range of entire concentration ie PA is not equal to P�AHA;PB is not equal to P�BHB(ii)∆mixH is not eual to 0 ∆mix V = 0 (iii)forms azerotorps