Question
Download Solution PDFAll solutions have lower water potential than pure water. The magnitude of this lowering due to dissolution of a solute is called
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- Water potential is a measure of the potential energy of water in a system compared to pure water, where the water potential is zero. The addition of solutes to water lowers its water potential, which is a critical concept in understanding osmosis and plant-water relations.
- Solute potential (also known as osmotic potential) is the component of water potential that is due to the presence of solute molecules. It is always negative because solutes lower the water potential of a solution.
- The magnitude of solute potential depends on the concentration of solute particles in the solution. The more solute particles present, the lower the solute potential.
- Pressure potential is the component of water potential due to the physical pressure on a solution. It can be positive or negative, depending on whether the pressure is turgor pressure (positive) or tension (negative).
- Pressure gradient refers to the change in pressure over a certain distance. It is not directly related to the concept of water potential or solute potential.
- Osmotic potential is another term for solute potential. Both terms describe the same concept: the component of water potential that is due to the presence of solute molecules.
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