Untrue about a higher concentration solution

Options

A. Less water potential
B. Less osmotic potential
C. More -ve water potential
D. More water potential

Answer

To determine which statement is untrue about a higher concentration solution, let's analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Water Potential**:
- Water potential is a measure of the potential energy in water, and it influences the movement of water in plants. Pure water has a water potential of 0. When a solute is added to water, the water potential decreases.

**Hint**: Remember that pure water has a water potential of 0, and adding solute decreases this value.

2. **Higher Concentration Solutions**:
- In a higher concentration solution, there are more solute particles compared to solvent (water). This results in a lower water potential because the presence of solute reduces the tendency of water to move.

**Hint**: Higher concentration means more solute and less water potential.

3. **Evaluating Statements**:
- **Statement 1**: "Less water potential" - This is true because a higher concentration solution has a lower water potential compared to pure water.
- **Statement 2**: "Less osmotic potential" - This is also true. Osmotic potential is inversely related to solute concentration; thus, a higher concentration solution has lower osmotic potential.
- **Statement 3**: "More negative water potential" - This statement is correct as well. Higher concentration solutions have more negative water potential due to the presence of solute.
- **Statement 4**: "More water potential" - This statement is untrue. In a higher concentration solution, the water potential is lower, not higher.

**Hint**: Compare each statement to the properties of higher concentration solutions to identify the one that contradicts the established facts.

4. **Conclusion**:
- The untrue statement about a higher concentration solution is "more water potential." This contradicts the understanding that higher concentration leads to lower water potential.

### Final Answer:
The untrue statement about a higher concentration solution is: **"More water potential."**