Pure water has the highest water potential (0 kPa at standard conditions), and the presence of solutes always lowers it, making it negative.
The water potential of pure water is 0 kPa at standard temperature and pressure, and it cannot have a positive value because solutes lower the water potential below zero.
| Front | State the water potential of pure water and explain why water potential can't have a positive value. |
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| Back | Water potential of pure water:
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