Solute potential Notes: Definitions & Explanations PDF | Download eBooks
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Solute potential Definition:
Solute potential (Ψs) of a solution is directly proportional to its molarity.
Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson
Solute potential Notes:
Solute potential is also called osmotic potential because solutes affect the direction of osmosis. The solutes in plants are typically mineral ions and sugars. By definition, the Ψs of pure water is 0. When solutes are added, they bind water molecules. As a result, there are fewer free water molecules, reducing the capacity of the water to move and do work. In this way, an increase in solute concentration has a negative effect on water potential, which is why the Ψs of a solution is always expressed as a negative number.
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