0
Factors Affecting
Solubility
Joan Santos
Elena Villanueva
Solubility
• whether or not a solute will dissolve in a
solvent and the extent in which it will
dissolve
• the amount of a...
Factors that affect
solubility
• The nature of the solute and solvent
• Temperature
• Pressure (only applicable to gases)
Nature of Solute and Solvent
Remember Covalent and Ionic?
• Polar Solvent- a liquid made up of polar molecules
• Non-polar...
Nature of Solute and
Solvent
• When two substances are similar they
can dissolve in each other
– polar solutes dissolve in...
Nature of Solute and
Solvent
• Ionic compounds are made up of
charged ions similar to polar
compounds
• Ionic compounds ar...
Nature of Solute and
Solvent
Solute Polar Solvent Non-polar solvent
Polar Soluble Insoluble
Non-Polar Insoluble Soluble
Io...
Temperature
• Solutions of gases in liquids are affected by temperature
– as temperature increases, the solubility of a GA...
Temperature
• Temperatures Affecting the Solubility as the Solution is Formed
– When the temperature drops while you mix t...
Pressure
• When the pressure is increased over the SOLVENT, the solubility of the gas is
increased.
• Why?
– pressure incr...
Factors Affecting Solubility
p=khc
p= partial pressure
kh= gas constant
(dimensions: pressure divided by concentration, de...
Factors of Dissolving
• rate of which a solid solute dissolves in
a solution depends on three factors:
surface area, stirr...
Surface Area
• dissolving solutes happen in the surface
area of the solvent
• speed up the process by increasing the
surfa...
Stirring
• dissolving happens at the surface of the
solvent
• contact between the solvent and the
solute is increased
Temperature
• raising the temperature increases the
rate at which a solute dissolves
• solvent particles move faster as th...
Upcoming SlideShare
Loading in...5
×

Chemreport 100215062218-phpapp01

1,673

Published on

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
1,673
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
25
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Transcript of "Chemreport 100215062218-phpapp01"

  1. 1. Factors Affecting Solubility Joan Santos Elena Villanueva
  2. 2. Solubility • whether or not a solute will dissolve in a solvent and the extent in which it will dissolve • the amount of a solute that will dissolve in a specific solvent given condition
  3. 3. Factors that affect solubility • The nature of the solute and solvent • Temperature • Pressure (only applicable to gases)
  4. 4. Nature of Solute and Solvent Remember Covalent and Ionic? • Polar Solvent- a liquid made up of polar molecules • Non-polar Solvent- a liquid made up of non-polar molecules
  5. 5. Nature of Solute and Solvent • When two substances are similar they can dissolve in each other – polar solutes dissolve in polar solvents – non-polar solutes tend to dissolve in non- polar solvents • “like dissolves like” – two liquids dissolve in each other because their molecules are alike in polarity
  6. 6. Nature of Solute and Solvent • Ionic compounds are made up of charged ions similar to polar compounds • Ionic compounds are more soluble in a polar solvent than in a non-polar solvent
  7. 7. Nature of Solute and Solvent Solute Polar Solvent Non-polar solvent Polar Soluble Insoluble Non-Polar Insoluble Soluble Ionic Soluble Insoluble
  8. 8. Temperature • Solutions of gases in liquids are affected by temperature – as temperature increases, the solubility of a GAS in a liquid decreases • WHY? – As temperature increases, the kinetic energy of the solute gas increases and the gas can escape • Solubility of SOLIDS in liquids: total opposite – the solubility of a solid increases as the temperature increases (there are a few exceptions)
  9. 9. Temperature • Temperatures Affecting the Solubility as the Solution is Formed – When the temperature drops while you mix the solute and solvent, raising the temperature will increase solubility – If the temperature stays neutral, the temperature will have minimal or insignificant effect either way – If the temperature is increased when the solute and solvent are mixed, raising the temperature will decrease solubility
  10. 10. Pressure • When the pressure is increased over the SOLVENT, the solubility of the gas is increased. • Why? – pressure increases as gas molecules strike the surface to enter solution is increased • Henry’s Law: solubility of gas is directly proportional to the partial pressure of the gas above the liquid
  11. 11. Factors Affecting Solubility p=khc p= partial pressure kh= gas constant (dimensions: pressure divided by concentration, depends on the solute, solvent and temperature) c= concentration of the solute
  12. 12. Factors of Dissolving • rate of which a solid solute dissolves in a solution depends on three factors: surface area, stirring, and temperature • the rate of dissolving is unrelated to the solubility if the solutes dissolves quickly or slowly does not alter or depend on its solubility
  13. 13. Surface Area • dissolving solutes happen in the surface area of the solvent • speed up the process by increasing the surface area • The greater the surface area per unit mass, the quicker it will dissolve
  14. 14. Stirring • dissolving happens at the surface of the solvent • contact between the solvent and the solute is increased
  15. 15. Temperature • raising the temperature increases the rate at which a solute dissolves • solvent particles move faster as they come in contact more with the solute
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×