Download the app

Questions  

A sample of 0.1 g of water at 1000C and normal pressure1.013×105 N m-2  requires 54 Cal of heat energy to convert to steam at1000C. If the volume of the steam produced is 167.1 cc  the change in internal energy of the sample, is

a
104.3 J
b
208.7 J
c
42.2 J
d
84.5 J

detailed solution

Correct option is B

Using first law of thermodynamics,ΔQ=ΔU+ΔW⇒54×4.18=ΔU+1.013×105167.1×10-6-0⇒ΔU=208.7 J

Talk to our academic expert!

+91

Are you a Sri Chaitanya student?


Similar Questions

100 mol of an ideal gas is heated from 10° to 20°C keeping its (i) volume constant (ii) pressure constant.
Let ΔUa and ΔUb denote the change in the internal energy of the gas due to process (i) and (ii),
respectively. Then, which of the following shall be true?


phone icon
whats app icon