Topic 9 Flashcards
1
Q
Give the equation of Van Hoff’s law
A
π = cRT
- R = Gas Constant*
- T = Temp*
2
Q
What is osmotic pressure
A
Pressure build up as molecules move
3
Q
What is a Hypotonic Solution?
A
Inner solution concentration (e.g inside a blood cell) is higher than outside. (Cell explosion)
4
Q
What is a Hypertonic solution?
A
Outer solution concentration is lower than the inside concentration. (Cell shrinkage)
5
Q
What is an isotonic solution?
A
Solution where the the inside and outside solutions are of the same concentrations
(Used for IV fluids)
6
Q
Direct measurement of osmotic pressure.
A
Measure height difference in a cyclinder connected to a solution by a membrane
P = ρgy
7
Q
Indirect measurement of osmotic pressure.
A
Using measured concentration, pressure can be calculated.
Conc. is measured by freezing/boiling point.
