Question

Find internal energy 1 atm pressure and volume change from 2 litre to 5 litre and 2 moles of a diatomic gas

Answer 1

Answer:

Given Data

Pressure = 1 atm

V1 = 2 L

V2 =5 L

Solution:

W = P Δ V = n R Δ T

As,

Δ T = P Δ V / n R

Δ T = 1 ( 5 - 2) / 2 x 0.0821

Δ T = 18.27 K

Δ U = n Cv Δ T

In case of diatomic gas,

Cv = 5/2 R

ΔU= 2 x 5/2 x 8.314 x 18.27

ΔU= 760K