(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Consider 1 gram of an ideal gas undergoing isobaric process. Suppose del(H) be the amount of heat given to it. Then,

del(H) = dU + del(W)

del(H) = 1 x C(v)dT + (P.dV)/J

But del(H) = C(p)dT

P.dV = r.dT

C(p)dT = C(v)dT + (r.dT)/J

C(p) - C(v) = r/J

2. Relevant equations

3. The attempt at a solution

In the above derivation, when volume is changing, how can they take dU = mC(v)dT?

Here m = mass of gas,r = gas constant,J = Mechanical equivalent of heat

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Isobaric process

**Physics Forums | Science Articles, Homework Help, Discussion**