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If one mole of the polyatomic gas is hav...

If one mole of the polyatomic gas is having two vibrational modes and `beta` is the ratio of molar specific heats for polyatomic gas `(beta= (C_(p))/(C_(V)))` then the value of `beta` is :

A

1.2

B

1.02

C

1.25

D

1.35

Text Solution

Verified by Experts

The correct Answer is:
A
f=3(translational)+3(rotational)+`2xx`(vibrational)
f=10
`beta`=1+`2/f`1+`(2)/(10)`
`beta=(12)/(10)=1.20`
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Knowledge Check

  • For polyatomic molecules having 'f' vibrational modes, the ratio of two specific heats, C_(P)/C_(V) is

    A
    `(1+f)/(2+f)`
    B
    `(2+f)/(3+f)`
    C
    `(4+f)/(3+f)`
    D
    `(5+f)/(4+f)`

  • The ratio of the specific heats of a gas is (C_(p))/(C_(v))=1.66 then the gas may be

    A
    `CO_(2)`
    B
    `He`
    C
    `H_(2)`
    D
    `NO_(2)`

  • For polyatomic molecules having 'f' vibrational modes, the ratio of two specific heat, (C_(P))/(C_(V)) is

    A
    `(1+f)/(2+f)`
    B
    `(2+f)/(3+f)`
    C
    `(4+f)/(3+f)`
    D
    `(5+f)/(4+f)`