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Question

Describe osmosis and diffusion.
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Solution

Osmosis is the special case of diffusion involving water molecules. Water molecules move from areas of high water concentration to areas of low water concentration through a selectively permeable membrane.



Diffusion is a spontaneous movement of particles from an area of high concentration to an area of low concentration; it does not require energy.

Solute
OsmosisDiffusionIt involves movement of solvent moleculesIt involves movement of solute moleculesMolecules move from lower concentrationMolecules move from higher concentrationof solute to higher concentration of soluteof solute to lower concentration of soluteIt occurs only across a semi permeable membraneIt does not require semipermeable membraneExample:Shrinking of potato sliceExample:Spreading of ink when awhen kept in concentrated sucrose solutiondrop of it is put in a glass of water.

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