wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A certain mass of gas is expanded from (1L. 10 atm) to (4L.5atm) against a constant external pressure of 1 atm. If initial temperature of gas is 300K and the heat capacity of process is 50 J/oC. Then the enthalpy change during the process is: (1 L atm 100J).

A
ΔH=15 kJ
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
ΔH=15.7 kJ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
ΔH=14.4 kJ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
ΔH=14.7 kJ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A ΔH=15 kJ
Let us consider the problem:
Given that
Cp=50j/0c
p1=10atmandp2=5atm
v1=1Landv2=4L
T1=300k
T2=P2V2T2P1V1
=5×4×30010×1=600k
Hence,
Entholpy change ΔH=Cpdt
Implies that
=50×(600300)
=15000J
=15kJ

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Bond Parameters
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon