Solutions and Concentrations/ and Colligative Properties

Question 1

Molarity formula

Answer 1

M=mol solute/L soln

Question 2

Molality

Answer 2

m=mol solute/kg solvent

Question 3

Mole fraction

Answer 3

mol solute/ total moles

Question 4

Soluble or Insoluble: ALL group 1 metals

Answer 4

Soluable

Question 5

Soluble or Insoluble: Ag+

Answer 5

Insoluble

Question 6

Soluble or Insoluble: NO-3

Answer 6

Soluable

Question 7

Soluble or Insoluble: NH+4

Answer 7

Soluable

Question 8

Soluble or Insoluble: ClO-4

Answer 8

Soluable

Question 9

Soluble or Insoluble: Pb2+

Answer 9

Insoluble

Question 10

Soluble or Insoluble: Hg2+

Answer 10

Insoluble

Question 11

Soluble or Insoluble: C2H3O2-

Answer 11

Soluable

Question 12

Polar or NP: Dissolves in Water

Answer 12

Polar

Question 13

Polar or NP: will not dissolve in water

Answer 13

Non-polar

Question 14

Phase Solubility: Name the 3 rules

Answer 14

1. Solids are more soluble at higher temperature.
2. Gases are less soluble at higher temperature.
3. Gases are more soluble at higher pressures.

Question 15

Colligative Properties: Freezing Pt. Depression

Answer 15

Delta T = -iKfm

Question 16

Colligative Properties: Boiling Pt. Elevation

Answer 16

Delta Tb = iKbm

Question 17

Colligative Properties: Vapor Pressure Depression (Raoults Law)

Answer 17

PH20 = Xh20(Ph20)

Question 18

Vant Hoff Factor:

Answer 18

Vant Hoff Factor = i

Example: NaCl i=2
Na2SO4 i=3
CH3OH i=1

Question 19

Osmotic Pressure:

Answer 19

Pi symbol = iMRT