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Two moles of a triatomic linear gas (neg...

Two moles of a triatomic linear gas (neglect vibration degree of freedom) are taken through a reversible process ideal starting from A as shown in figure.
The volume ratio `(V_(B))/(V_(A))=4`. If the temperature at A is `-73^(@)C`, then :

(ii) Total enthalpy change in both steps is :

A

3000 R

B

4200 R

C

2100 R

D

0

Text Solution

Verified by Experts

The correct Answer is:
B, C
(i) (c) `w=-P.DeltaV=-nRDeltaT=-2xx8.314xx600`
`=-9.97kJ`
(ii) (b) `DeltaH_("total")=DeltaH_(AB)+DeltaH_(BC)=nC_(p,m)DeltaT+0`
`=2xx(7)/(2)xxRxx(800-200)`
= 4200 R
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