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Which has minimum osmotic pressure ?...

Which has minimum osmotic pressure ?

A

200 mL of 2 M NaCl solution

B

200 mL of 1 M glucose solution

C

200 mL of 2 M urea solution

D

All have same osmotic pressure

Text Solution

Verified by Experts

The correct Answer is:
B
Osmotic pressure is a colligative property. Particles in NaCl solution = `2 xx 2 = 4M`. Particles in glucose solution = `1 × 1 = 1 M`. Particles in urea solution = `2 × 1 = 2M`. Least particles are in glucose solution, hence its osmotic pressure is the minimum.
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