Question

Identify correct statements from following regarding \(0.2 \text{M}\) urea and \(0.2 \text{M}\) sucrose solutions.

• A. The urea solution is hypertonic to sucrose solution.
• B. The osmotic pressure of urea solution is higher than that of sucrose solution.
• C. These solutions exhibit same osmotic pressure.
• D. The sucrose solution is hypotonic to urea solution.

Hint:

Osmotic pressure depends on the number of particles, and both solutes are nonelectrolytes.

Answer 1

The Correct Option is C

Step 1: Count particles:
$0.2$ M urea gives $0.2$ mol of particles per litre. $0.2$ M sucrose also gives $0.2$ mol of particles per litre, since neither ionises.

Step 2: Compare:
Equal particle concentration at the same $T$ means equal $\pi$. The solutions are isotonic, which makes (C) true and the other three false.

Final Answer:
Both solutions show the same osmotic pressure, option (C). \[ \boxed{\text{Same osmotic pressure}} \]