Definitions

Question 1

Osmosis

Answer 1

Flow of water across a semi-permeable membrane. From low solute concentration to high solute concentration.

Question 2

Molarity

Answer 2

Moles of substance per Litre (L) of solution (mol/L)

Question 3

Molality

Answer 3

Moles of substance per Kilogram (Kg) of solvent (mol/Kg)

Question 4

Osmolarity

Answer 4

Osmoles per Litre (L) of solution

Question 5

Osmolality

Answer 5

Osmoles per Kilogram (Kg) of solution

Question 6

Osmotic Pressure

Answer 6

The pressure that must be applied to the higher concentrated solution to stop the movement of water.
Use Van’t Hoff’s Law to estimate it - π = ncRT

Question 7

Van’t Hoff’s Law

Answer 7

π = ncRT

π = Osmotic Pressure (atmosphere)
n = # of dissociable particles/molecules 
c = Total solute concentration (mol/L)
R = Gas constant 
T = Absolute temperature (K°)

Question 8

Isosmotic

Answer 8

Solution with SAME osmolality

Question 9

Hypo-osmotic

Answer 9

LOWER osmolality

Question 10

Hyper-osmotic

Answer 10

HIGHER osmolality

Question 11

Isotonic

Answer 11

Cell remains the SAME size

Question 12

Hypotonic

Answer 12

Cell SWELLS and may rupture

Question 13

Colloid Osmotic Pressure AKA Oncotic Pressure

Answer 13

Osmotic pressure exerted by proteins and their accompany cations

Question 14

Hypertonic

Answer 14

Cell SHRINKS and becomes crenated