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Osmosis is the movement of water from a region of high concentration to a region of low concentration.
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Introduction Osmosis is the movement of water from a region of high concentration to a region of low concentration. Osmosis takes place when a solution is separated from another solution of a different concentration via a selectively permeable membrane. In this case water moves from a more dilute (low concentration) area to a more solute (high concentration) area. Water molecules pass across a membrane when they collide with it as shown in the diagram: When the membranes collide the water exerts a pressure on the membrane. This is called the water potential. Pure water has a water potential of zero so there are maximum collisions taking place which reduce the do not allow any water into the membrane. When solute is added to the water, the solute particles get in the way of the water reducing the number of collisions and making the water potential lower and therefore allowing water into the...
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