Question

The latent heat of vaporization at the critical point is

• A. less than zero
• B. greater than zero
• C. equal to zero
• D. equal to one

Hint:

At the critical point, the liquid and vapor phases merge, so the latent heat of vaporization becomes zero.

Answer 1

The Correct Option is C

Step 1: Understand latent heat at the critical point.
At the critical point, the liquid and vapor phases become indistinguishable, and the latent heat of vaporization becomes zero. This is because at the critical point, the phase transition from liquid to vapor does not occur in the traditional sense. Step 2: Conclusion.
The latent heat of vaporization at the critical point is zero. Final Answer: \[ \boxed{0} \]