Osmotic pressure: Difference between revisions

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Osmotic pressure - is the difference in pressure between two solutions that prevent fluid flow through semi-permeable membrane <ref>Alberts B, Johnson A, Lewis J, et al. (2002) Molecular Biology of the Cell. 4th edition. New York: Garland Science.</ref>.&nbsp;  
Osmotic pressure - is the difference in the pressure between two solutions that prevent fluid flow through semi-permeable membrane <ref>Alberts B, Johnson A, Lewis J, et al. (2002) Molecular Biology of the Cell. 4th edition. New York: Garland Science.</ref>.&nbsp;  


Osmotic pressure occurs when two solutions, separated by semipermeable membrane, have different concentrations of solutes, accordind to a rule of [[osmosis|osmosis]], fluid moves from the area of low concentration of solutes to an area of high concentration <ref>Kent, M. (2000) Advanced Biology. Oxford: Oxford University Press.</ref>.&nbsp;  
Osmotic pressure occurs when two solutions, separated by semipermeable membrane, have different concentrations of solutes, according to a rule of [[Osmosis|osmosis]], fluid moves from an area of low concentration of solutes to an area of high concentration <ref>Kent, M. (2000) Advanced Biology. Oxford: Oxford University Press.</ref>.&nbsp;  


Osmotic pressure can be calculated using the following formula <ref>Alberts B, Johnson A, Lewis J, et al. (2002) Molecular Biology of the Cell. 4th edition. New York: Garland Science.</ref>:  
Osmotic pressure can be calculated using the following formula <ref>Alberts B, Johnson A, Lewis J, et al. (2002) Molecular Biology of the Cell. 4th edition. New York: Garland Science.</ref>:  
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Where:  
Where:  


*n - the number of moles of solute present
*n - the number of moles of solute present  
*R - ideal gas constant&nbsp;
*R - ideal gas constant&nbsp;  
*T - temperature in Kelvin
*T - temperature in Kelvin  
*V - volume of the solution
*V - volume of the solution  
*MM - molar mass of the solute<br>
*MM - molar mass of the solute<br>


=== References ===
=== References ===


<references /><br>
<references /><br>  


<br>
<br>

Revision as of 13:15, 17 March 2015

Osmotic pressure - is the difference in the pressure between two solutions that prevent fluid flow through semi-permeable membrane [1]

Osmotic pressure occurs when two solutions, separated by semipermeable membrane, have different concentrations of solutes, according to a rule of osmosis, fluid moves from an area of low concentration of solutes to an area of high concentration [2]

Osmotic pressure can be calculated using the following formula [3]:

        ∏ = nRT/V = MMRT

Where:

  • n - the number of moles of solute present
  • R - ideal gas constant 
  • T - temperature in Kelvin
  • V - volume of the solution
  • MM - molar mass of the solute

References

  1. Alberts B, Johnson A, Lewis J, et al. (2002) Molecular Biology of the Cell. 4th edition. New York: Garland Science.
  2. Kent, M. (2000) Advanced Biology. Oxford: Oxford University Press.
  3. Alberts B, Johnson A, Lewis J, et al. (2002) Molecular Biology of the Cell. 4th edition. New York: Garland Science.