Properties Of Solids And Liquids Question 85

Question: 2gm of steam condenses when passed through 40gm of water initially at 25°C. The condensation of steam raises the temperature of water to 54.3°C. What is the latent heat of steam [J & K CET 2005]

Options:

A) 540 cal/g

B) 536 cal/g

C) 270 cal/g

D) 480 cal/g

Show Answer

Answer:

Correct Answer: A

Solution:

Let L be the latent heat and using principle of calorimetry.

2L + 2 (100 - 54.3) = 40 ´ (54.3 - 25.3)

therefore L = 540.3 cal/gm.



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