Thermometry Calorimetry And Thermal Expansion 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) Þ L = 540.3 cal/gm.
BETA
