Question

Two chambers, A and B, containing solutions are separated by a semipermeable membrane.

(f) If one chamber has a Ψ of – 2000 kPa, and the other – 1000 kPa, which is the chamber that has the higher Ψ?

Answer 1

1) It is defined as the potential energy of water per unit volume with respect to pure water.

2)At standard temperature and pressure, the water potential of pure water is zero by convention. T hus athus more negative value denotes less water potential. So -1000 kPa will be considered to have higher water potential.