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diffrence between positive devitation and negetive devitation?

diffrence between positive devitation and negetive devitation?

Grade:12

1 Answers

Umakant biswal
5359 Points
5 years ago
@ srikanth 
What u need to understand is that , when a solution doesnot obey the roults law , in that case we can give it a name of non ideal solution .. 
and in that non ideal solution we have 2 catagory 
1- solution showing +ve deviation 
2- solution showing -ve deviation . 
CHARECTERISTICS OF +VE DEVIATION 
1- the vapour pressure of these solution will be always higher that what we expected from roults law . 
2- here del(H) MIXING WILL BE GREATER THAT 0 . 
3- ALSO , DEL (V) MIXING IS GREATER THAN 0 
4- The intermolecular force of attraction between solute- solute and solvent- solvent will be greater than that of solute- solvent 
CHARECTERISTICS OF -VE DEVIATION 
1- THE vapour pressure of such solution will be always lesser as expected by roults law 
2- here , the del (h ) mixing will be less than 0 
3- here the del (v) mixing is greater than 0 
4- the intermolecular force of attraction between solute – solute and solvent-solvent , will be lesser than that of solute – solvent 
HOPE IT CLEARS YOUR DOUBT 
ALL THE BEST /..
 

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