JEE Advanced 2020Paper 1
- Exam
- JEE Advanced
- Year
- 2020
- Paper
- Paper 1
- Subject
- Chemistry
- Chapter
- Thermodynamics (C)
JEE Advanced 2020 · Paper 1 · Chemistry · Thermodynamics (C)
In thermodynamics, the P - V work done is given by w = - ∫ dVP _...
In thermodynamics, the work done is given by . For a system undergoing a particular process, the work done is,
. This equation is applicable to a
Options
- Asystem that satisfies the van der Waals equation of state.
- Bprocess that is reversible and isothermal.
- Cprocess that is reversible and adiabatic.
- Dprocess that is irreversible and at constant pressure.
Correct answer
A. system that satisfies the van der Waals equation of state.
Step-by-step solution
(W=-\int P_{\text{ext }} d v)
From van der waal equation of state for one mole gas (p+\frac{a}{v^{2}}(v-b)=\mathrm{RT})
(p=\frac{\mathrm{RT}}{(v-b)}-\frac{a}{v^{2}})
For reversible process
(p_{\text{ext }}=p_{\text{gas }})
(W=-\int \frac{\text{RT }}{(v-b)}-\frac{a}{v^{2}})
process is only not applicable for irreversible process.