solution chemistry unit iii 4. polar and non polar solvent
TRANSCRIPT
Solution Solution ChemistryChemistry
Unit IIIUnit III4. Polar and Non Polar 4. Polar and Non Polar
SolventSolvent
Like Dissolves LikeLike Dissolves Like
Polar solutesPolar solutes dissolve in dissolve in polar polar solventssolvents and and non-polarnon-polar solutes solutes dissolve in dissolve in non-polar solventsnon-polar solvents
Sucrose is a Sucrose is a polar polar
covalent covalent solutesolute
Grease is a non Grease is a non polar covalent polar covalent
solutesolute
How this WorksHow this WorksMarblesMarbles
MagnetMagnet
How this WorksHow this Works
How this WorksHow this Works
How this WorksHow this Works
How this WorksHow this Works
Like Dissolves LikeLike Dissolves Like
A non-polar solute does not mix well A non-polar solute does not mix well with a polar solvent and visa versa.with a polar solvent and visa versa.
Alcohol or hydrochloric acid (HCl), Alcohol or hydrochloric acid (HCl), being polar compounds, both being polar compounds, both dissolve well in the polar solvent dissolve well in the polar solvent water.water.
Oil or CCl4, being non-polar, do not Oil or CCl4, being non-polar, do not mix well at all with water.mix well at all with water.
London ForcesLondon Forces
Nonpolar solutesNonpolar solutes require solvents require solvents with sufficient London Forces to with sufficient London Forces to remove remove solute out of crystalsolute out of crystal and and into solutioninto solution
Non polar solvents have Non polar solvents have largelarge London forcesLondon forces
Polar solvents have Polar solvents have smallsmall London London forcesforces
Why doesn’t paint thinner Why doesn’t paint thinner dissolve salt?dissolve salt?
Answer: the paint thinner molecules Answer: the paint thinner molecules have no charges to attract the ions have no charges to attract the ions (non-polar)(non-polar)
OverviewOverview
Material Best Solvent
Ionic Solids (NaCl) Polar covalent (water)
Polar-covalent solids(sugar)
Polar covalent (water)
Non-polar covalent(iodine, grease)
Non-Polar covalent (paint thinner, gasoline, diesel fuel)
Hebden Hebden
Do Exercises 17 on page 205 Do Exercises 17 on page 205 Do Exercise 18-22 on page 207Do Exercise 18-22 on page 207 Do Exercises 23-27 on page 208Do Exercises 23-27 on page 208