Question

Which has minimum osmotic pressure ?

Answer 1

Osmotic pressure is the minimum pressure which needs to be applied to a solution to prevent the inward flow of its pure solvent across a semipermeable membrane.

Answer 2

Which has a minimum osmotic pressure?

A. 200 mL of 2 M NaCl pressure

B. 200 mL of 1 M glucose solution

C. 200 mL of 2 M urea solution

D. All have same osmotic pressure

This is the correct question with options.

Answer:

Correct Answer - B) 200ml of 1M glucose solution.

Explanation:

Osmotic pressure is a colligative property.

Particles in NaCl solution = 2 × 2 = 4 M =2×2=4M .

Particles in glucose solution = 1 × 1 = 1 M =1×1=1M.

Particles in urea solution = 2 × 1 = 2 M =2×1=2M.

Least particles are in glucose solution, hence its osmotic pressure is the minimum.

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