What is water potential? What is the relationship between water potent

1.	What is water potential? What is the relationship between water potential with solute potential and pressure?
Answer» Water potential: It is the difference in the free energy and chemical potential per unit molal volume of water in a solution over its pure state at the same temperature and pressure. Chemical potential of pure water at normal temperature and pressure is zero. It is denoted by Ψ_w. Solute potential: All solutions have lower water potential than their pure form. Thus the water potential is inversely proportional to solute concentration, because free energy of water decreases. Pressure potential: Pressure potential or turgor pressure is the pressure exerted by protoplast on cell wall. Pressure potential is + and denoted by Ψ_p.= Ψ_θ.= Ψ_c.

What is water potential? What is the relationship between water potential with solute potential and pressure?

Answer»

Water potential: It is the difference in the free energy and chemical potential per unit molal volume of water in a solution over its pure state at the same temperature and pressure. Chemical potential of pure water at normal temperature and pressure is zero. It is denoted by Ψ_w.

Solute potential: All solutions have lower water potential than their pure form. Thus the water potential is inversely proportional to solute concentration, because free energy of water decreases.

Pressure potential: Pressure potential or turgor pressure is the pressure exerted by protoplast on cell wall. Pressure potential is + and denoted by Ψ_p.= Ψ_θ.= Ψ_c.

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