Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Welcome
to
My Presentation
OSMOTIC PRESSURE
CourseTitle: Physical
Chemistry II
Course Code: ACCE 260
Applied Chemistry & Chemical
Engineering
SHAIKH ASHRAFUL ALAM
Dept. of Applied Chemistry & Chemical Engineering
BSMRSTU,Gopalgang,Bangladesh
Osmosis
The passage of solvent into solution or from more dilute to concentrated solution
when the two are separated from...
Osmotic Pressure
Osmotic pressure is the minimum pressure which needs to be applied
to a solution to prevent interior flo...
Osmosis and Osmotic Pressure
Determination of Osmotic Pressure
Pfeffer’s Method
Berkely and Harthey’s Method
A Modern Osmometer.
Important term of osmosis & Osmotic
pressure
Isotonic: Solutions have equal concentration of solute, and so equal osmotic...
Law of osmotic pressure
Boyle-van’t Hoff law for solutions
Charles’- Van’t Hoff law for solution
Combination of two law ...
Calculating osmotic pressure
The ideal gas law states
But n/V = M and so
Where 𝑀 is the molar concentration of particle...
Relation between osmatic pressure and
other colligative properties
∆𝑇𝑖 =
(𝑅𝑇𝑖)2
∆𝐻𝑖
×
𝑛2
𝑛1 + 𝑛2
=
(𝑅𝑇 𝑖)2
∆𝐻 𝑖
× 𝑥2
Here,...
Osmotic Pressure – Applications:
• Osmotic pressure effects normally move solvent molecules from a dilute to a concentrate...
Importance of Osmosis and Osmotic Pressure
Oncotic pressure of blood plasma
Formation of tissue fluid
Regulation of cel...
Upcoming SlideShare
Loading in …5
×

Osmotic pressure

9,704 views

Published on

Presentation about impotent term, OSMOTIC PRESSURE

Published in: Education
  • Be the first to comment

Osmotic pressure

  1. 1. Welcome to My Presentation
  2. 2. OSMOTIC PRESSURE CourseTitle: Physical Chemistry II Course Code: ACCE 260 Applied Chemistry & Chemical Engineering
  3. 3. SHAIKH ASHRAFUL ALAM Dept. of Applied Chemistry & Chemical Engineering BSMRSTU,Gopalgang,Bangladesh
  4. 4. Osmosis The passage of solvent into solution or from more dilute to concentrated solution when the two are separated from each other by a semipermeable membrane is known as osmosis. Diffusion of water through the semi permeable membrane from a solution of lower concentration towards a solution of higher concentration Pure Solvent Concentrated Solution semi permeable membrane Solvent molecule Solute molecule
  5. 5. Osmotic Pressure Osmotic pressure is the minimum pressure which needs to be applied to a solution to prevent interior flow of water across a semipermeable membrane. or The pressure required to stop osmosis.
  6. 6. Osmosis and Osmotic Pressure
  7. 7. Determination of Osmotic Pressure Pfeffer’s Method Berkely and Harthey’s Method A Modern Osmometer.
  8. 8. Important term of osmosis & Osmotic pressure Isotonic: Solutions have equal concentration of solute, and so equal osmotic pressure. Hypertonic: Solution with higher concentration of solute. Hypotonic: Solution with lower concentration of solute. Isotonic Hypertonic Hypotonic
  9. 9. Law of osmotic pressure Boyle-van’t Hoff law for solutions Charles’- Van’t Hoff law for solution Combination of two law we get Van’t Hoff law for solution π𝑉 = 𝑛𝑅𝑇 ( here 𝜋 is osmotic pressure)
  10. 10. Calculating osmotic pressure The ideal gas law states But n/V = M and so Where 𝑀 is the molar concentration of particles and 𝜋 is the osmotic pressure, 𝑖 isVan’t Hoff factor 𝑃𝑉 = 𝑛𝑅𝑇 𝜋 = 𝑖𝑀𝑅𝑇
  11. 11. Relation between osmatic pressure and other colligative properties ∆𝑇𝑖 = (𝑅𝑇𝑖)2 ∆𝐻𝑖 × 𝑛2 𝑛1 + 𝑛2 = (𝑅𝑇 𝑖)2 ∆𝐻 𝑖 × 𝑥2 Here, ∆𝑇𝑖 is the elevation in the boiling or depression in the freezing point. 𝑇𝑖 is the boiling or freezing point of the solvent. ∆𝐻𝑖 is the enthalpy change during phase change. 𝑥2 is the mole fraction of solute in solution.
  12. 12. Osmotic Pressure – Applications: • Osmotic pressure effects normally move solvent molecules from a dilute to a concentrated solution. In water desalination a large “external” pressure is used to push solvent molecules (water) from sea water through a membrane to produce drinking water. The process is shown below. Desalination of saltwater by reverse osmosis
  13. 13. Importance of Osmosis and Osmotic Pressure Oncotic pressure of blood plasma Formation of tissue fluid Regulation of cell volume

×