Question:

Water potential is decreased when some solute dissolved in water because:

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Remember: Adding solute $\rightarrow$ more bound water $\rightarrow$ fewer free water molecules $\rightarrow$ lower water potential.
Updated On: Jun 10, 2026
  • concentration of water decrease with more free water molecules
  • concentration of water decrease with fewer free water molecules
  • concentration of water increases with fewer free water molecules
  • concentration of water increases with more free water molecules
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The Correct Option is B

Solution and Explanation

Step 1: Concept
Water potential ($\Psi_w$) in solutions.

Step 2: Meaning
Adding solutes reduces the free energy of water, thereby lowering its potential.

Step 3: Analysis
Solutes bind to water molecules, decreasing the number of "free" water molecules available to move. This lower concentration of free water results in a decreased water potential.

Step 4: Conclusion
Option B accurately explains this relationship.

Final Answer: (B)
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