Question

The specific heats of a gas at constant volume and constant pressure are 0.038 cal deg19-1 and 0.062 cal degg
(A) The atomicity of the gas molecule is 2.
(B) The molar of the gas is 83 g mol-1
(C) Cp for the gas is 5 cal deg? mol-1
(D) The gas has such a low critical temperature that it cannot be condensed to form a liquid above 10 k.​

Answer 1

Answer:

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Explanation:

Specific heats at constant V, (C

v

)=0.075cal/g

(a) ∵C

p

−C

v

=

M

R

∴0.125−0.075=

M

2

or M=40

(b) For atomicity, γ=

C

v

C

p

=

0.075

0.125

=1.66

i.e., gas is monoatomic.

(c) Since gas is monoatomic and thus no. of atoms of gas in 1 mole,

=6.023×10

23

atoms

Hence, option A is correct.