the solvation process

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1. The SolvaTion
ProceSS
Marjorie D. Osorio
BEED1-3 DAY

2. The SolvaTion ProceSS
Attractive forces exist among the particles of
all substances
 London Dispersion
Dipole-dipole
Hydrogen bonding
If the attractive forces between the solute and
the solvent are greater than the attractive
forces holding the solute particles together, the
solute dissolves in the solvent

3. Solvation is the process of surrounding
solute particles with solvent particles to
form a solution.
Solvation in water is called hydration.
For ionic compounds that dissolve in
water, the attraction between dipoles of
a water molecule and the ions of a
crystal are greater than the attraction
among ions of a crystal.

4. Factors that aFFect rate oF
dissolving oF solid in liquid
1. Agitation
 Stirring or shaking moves dissolved particles away from
the contact surfaces more quickly and allows new
collisions to occur.
 This is why you stir your tea after you put sugar in it.
 2. Surface area
Breaking the solute into small pieces increases surface
area and allows more collisions to occur.
This is why you use granulated sugar instead of sugar
cubes

5. Factors that aFFect rate oF
dissolving oF solid in liquid
3. Temperature
As temperature increases, rate of
solvation increases.  Particles are
moving faster.
This is why sugar dissolves faster in
hot tea than in iced tea.

6. solubility
Solubility depends on the nature
of the solute and solvent.
Solubility is affected by
increasing the temperature of the
solvent because the kinetic energy
of the particles increases.

7. Solubility of SolidS in liquidS
Generally increases with
an increase in
temperature (some
exceptions)
Not affected by pressure

8. Solubility of gaSeS in liquidS
Increases with an increase in
pressure (Henry’s Law)
This is how carbonated
beverages are made and why
they go flat if left open

9. Solubility of gaSeS in liquidS
How is the solubility of gases
affected by temperature?
Solubility of gases decreases with an
increase in temperature
This is why soda at room temperature
goes flat faster than soda in the
refrigerator

10. Solubility of gaSeS in liquidS
How is the solubility of gases
affected by temperature?
Solubility of gases decreases with an
increase in temperature
This is why soda at room temperature
goes flat faster than soda in the
refrigerator