3) IMF

Question 1

E) dipole moment

Answer 1

= charge x radius

Question 2

D) Names of phase changes

Answer 2

Solid - gas = sublimation
solid - liquid = melting
liquid - gas = evaporation

Gas - solid = deposition
gas - liquid = condensation
liquid - solid = freezing

Question 3

E) Henrys law

Answer 3

Solubility = k x Pressure

Question 4

E) Daltons partial pressure law

Answer 4

Ptotal = sum of partial pressures

Question 5

E) Molarity

Answer 5

M = mass of solute / l of solution

Question 6

E) Mole fraction

Answer 6

X = moles of component / moles of solution

Question 7

E) Mass %

Answer 7

% = mass of solute/mass of solution x 100

Question 8

E) Molality

Answer 8

m = moles of solute / kg of solvent

Question 9

E) Parts per million

Answer 9

ppm = mass of componentx10^6 / mass of solution

Question 10

E) Raoults law

Answer 10

Psolution = Psolvent x Xsolvent

Question 11

E) Osmolarity

Answer 11

moles of solute / l of solution
OR
iM

Question 12

E) Osmotic pressure

Answer 12

= iMRT

Question 13

E) Dilution law

Answer 13

Moles of initial = moles of final
Mi x Vi = Mf x Vf

Question 14

D) Colloids: Gas medium
+ examples

Answer 14

+ gas dispersion - N/A
+ liquid dispersion - Liquid aerosol (Clouds, mist)
+ solid dispersion - Solid aerosol (Smoke, air)

Question 15

D) Colloids: Liquid medium
+ examples

Answer 15

gas dispersion - foam (Whipped cream)
liquid dispersion - emulsion (Milk)
solid dispersion - sol (Ink)

Question 16

D) Colloids: Solid medium
+ examples

Answer 16

Gas dispersion - Solid foam (Aerogel)
Liquid dispersion - Gel / solid emulsion (Gelatin + cheese)
Solid dispersion - Solid sol (Cranberry glass)

Question 17

D) Phase changes - colloids

Answer 17

Homogenous system -> Colloids = aggregation
Colloids -> heterogenous system = coagulation
Heterogenous system -> colloids = dispersion