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Osmotic Pressure and Osmotic Potential

The water pot...

Question

The water potential of a solution is :

A

Directly proportional to the concentration of the solution

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B

Directly proportional to the concentration of the solute

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C

Directly proportional to the concentration of solvent molecules of the solution

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D

Inversely proportional to the concentration of solvent molecules of the solution

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Solution

The correct options are
A Directly proportional to the concentration of the solution
C Directly proportional to the concentration of solvent molecules of the solution
Water potential (Ψ) is actually determined by taking into account two factors - solute potential (ΨS) and pressure potential (ΨP). The formula for calculating water potential is Ψ = ΨS + ΨP. Solute potential (Ψs) decreases with increasing solute concentration; a decrease in Ψs causes a decrease in the total water potential. When solvent concentration in the solution increases, water potential of the solution increases.
So, the correct option is 'Directly proportional to the concentration of the solvent molecules of the solution'.

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