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A diatomic gas obeys the law pV^x= const...

A diatomic gas obeys the law `pV^x=` constant. For what value of x, it has negative molar specific heat?

A

` x gt 1.67`

B

`x lt 1.67`

C

`1 lt x lt1.4`

D

`1 lt x lt 1.67`

Text Solution

Verified by Experts

The correct Answer is:
D
`C = C_(V) + (R)/(1-x) = (3)/(2)R = + (R)/(1-x) lt 0 `
`implies (5-3x)/(1-x) lt 0 implies 1 lt x lt 1.67`
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