Question

What is the boiling point (in K) of the urea solution from the given graph?

• A. \( T_1 \)
• B. \( T_2 \)
• C. \( T_3 \)
• D. \( T_4 \)

Hint:

A non-volatile solute (like urea) raises the boiling point of a solution compared to the pure solvent.

Answer 1

The Correct Option is C

Step 1: Understanding Boiling Point Elevation
- Boiling point is when the vapour pressure = 1 atm.
- Water boils at \( T_2 \).
- Urea solution has a higher boiling point due to colligative properties.
- From the graph, \( T_3 \) corresponds to the urea solution’s boiling point.