Question

A gas mixture consists of 2 moles of O₂ and 4 moles of Ar at
temperature T. Neglecting all vibrational modes, the total
internal energy of the system is :- [2017]
(a) 15 RT (b) 9 RT
(c) 11 RT (d) 4 RT

Answer 1

Answer:

Total internal energy ν=

2

f

O

2

n

O

2

RT+

2

f

Ar

n

A

r

ν=

2

5

×2RT+

2

3

×4RT

ν=5RT+6RT

ν=11RT

Explanation:

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