Two chambers A & Bm separated by a semipermeable membrane, contain respectively 1M glucose solution and 2M glucose solution. In this condition net water movement is form A to B. If solution os chamber B is replaced by 1M NaCl solution then:

Options

A. net water movement will remain same i.e.A to B
B. their will be no net water movement because bith the solution A and B will have same concentration
C. net water movement will become B to A
D. semipermeable membrane will not function properly because both the solutions A and B will have different solutes

Answer

To solve the problem, we need to analyze the situation step by step, focusing on the concepts of osmolarity and water movement across a semipermeable membrane.

### Step-by-Step Solution:

1. **Understanding the Initial Conditions**:
- Chamber A contains a 1M glucose solution.
- Chamber B contains a 2M glucose solution.
- Since the concentration of solute (glucose) is higher in Chamber B, water will move from Chamber A (lower solute concentration) to Chamber B (higher solute concentration) due to osmosis.

**Hint**: Remember that water moves from areas of low solute concentration to areas of high solute concentration.

2. **Replacing the Solution in Chamber B**:
- The solution in Chamber B is replaced with a 1M NaCl solution.
- NaCl dissociates into Na⁺ and Cl⁻ ions in solution, effectively doubling the number of particles in the solution.

**Hint**: Consider how solutes dissociate in solution when calculating osmolarity.

3. **Calculating Osmolarity**:
- For the 1M glucose solution in Chamber A, the osmolarity is 1 osmolar (since glucose does not dissociate).
- For the 1M NaCl solution in Chamber B, the osmolarity is 2 osmolar (1M Na⁺ + 1M Cl⁻ = 2 osmolar).

**Hint**: Osmolarity is the total concentration of solute particles in a solution.

4. **Determining Water Movement**:
- Since the osmolarity in Chamber A (1 osmolar) is less than that in Chamber B (2 osmolar), water will move from Chamber A to Chamber B.
- This movement occurs because water moves from areas of lower osmolarity to areas of higher osmolarity.

**Hint**: Water movement is influenced by osmolarity, not just solute concentration.

5. **Conclusion**:
- The net water movement will remain the same, which is from Chamber A to Chamber B.

### Final Answer:
The net water movement will remain the same, that is, from Chamber A to Chamber B.