Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

In irreversible P-V expansion of gas, workdone by the gas(system) is often expressed in terms of the external pressure without considering the internal pressure of the gas.Why is this so? Can we not determine the work in terms of internal pressure of the system? Please explain more elaborately.

In irreversible P-V expansion of gas, workdone by the gas(system) is often expressed in terms of the external pressure without considering the internal pressure of the gas.Why is this so? Can we not determine the work in terms of internal pressure of the system? Please explain more elaborately.

Grade:12th pass

1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
6 years ago
In irreversible P-V expansion of gas, workdone by the gas(system) is often expressed in terms of the external pressure without considering the internal pressure of the gasbecause in an irreversible expansion work is always done against an external pressure.Internal pressure is something which aid in expansion therefore work done by the gas is taken as negative
Work is said to be done against an external force,without external force work done is 0
w=-pextdv(expansion)

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free