Solubility 7 Ideal & Non Ideal solutions

Ideal & Non Ideal solutions, Comparison between Ideal & Non Ideal Solutions, Deviation from Raoult’s Law

1. SOLUBILITY –7
IDEAL & NON-IDEAL
SOLUTIONS
Presented By:
Mr. S.M. Ambore
Asst. Professor,
DK Patil Institute of Pharmacy, Loha. Nanded

2. LEARNINGOUTCOMES….
Ideal Solutions
Non Ideal Solutions
Comparison between Ideal &
Non Ideal Solutions
Deviation from Raoult’s Law 2

3. 3
IDEALSOLUTIONS
Thesolutionsinwhichtheinteractionbetween
moleculesofthecomponentsdoesnotdifferfromthe
interactionsbetweenthemoleculesofeachcomponentin
pureform.
Thatmeansthesearethosesolutionswhichfollows
theRaoult’slaw.

4. 4
NONIDEALSOLUTIONS
Thesolutionsinwhichtheinteractionbetween
moleculesofthecomponentsdifferfromtheinteractions
betweenthemoleculesofeachcomponentinpureform.
Thatmeansthesearethosesolutionswhichdoes
notfollowstheRaoult’slaw.

5. 5
Ideal Solutions
PA= PA
0
XA
PB= PB
0
XB
Hmixing= 0
Vmixing= 0
solute-solute =
solvent-solvent =
solute-solvent
Eg. Benzene-Toluene,
Chlorobenzene-Bromobenzene
Non Ideal Solutions
PA= PA
0
XA
PB= PB
0
XB
Hmixing= 0
Vmixing= 0
solute-solute =
solvent-solvent =
solute-solvent
Eg. Alcohol-Water,
Phenol-Water

6. 6
+VE DEVIATION
PA> PA
0
XA
PB> PB
0
XB
PTOTAL > PA+ PB
Hmixing> 0
Vmixing>0
-VE DEVIATION
PA< PA
0
XA
PB< PB
0
XB
PTOTAL< PA + PB
Hmixing< 0
Vmixing< 0
NONIDEALSOLUTIONS

7. IDEALSOLUTION
7
DK Patil Institute of Pharmacy
PA= PA
0
XA
PB= PB
0
XB
PTOTAL = PA + PB

8. DEVIATIONFROMRAOULT’SLAW
8
DK Patil Institute of Pharmacy
+VE DEVIATION -VE DEVIATION
PA> PA
0
XA
PB> PB
0
XB
PTOTAL >PA + PB
PA< PA
0
XA
PB< PB
0
XB
PTOTAL <PA + PB

9. 9
+VE DEVIATION
A –B < A-A + B-B
Intermolecular force of
of attraction between
Solute –Solvent is less
less causing more vapor
vapor pressure
-VE DEVIATION
A –B > A-A + B-B
Intermolecular force of
of attraction between
Solute –Solvent is more
more causing less vapor
vapor pressure
NONIDEALSOLUTIONS

10. 10
Ambore Sandeep