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Imdadul Haque posted an Question
November 11, 2020 • 16:53 pm 30 points
  • IIT JAM
  • Chemistry (CY)

The root mean square speed of the molecules of diatomic gas is u. when the temperature is 5. doubled, the molecules dissociates into two atoms. the new rms spee

The root mean square speed of the molecules of diatomic gas is u. When the temperature is 5. doubled, the molecules dissociates into two atoms. The new rms speed of the atom is (B) u (A) 2u (D) 4u (C) 2u

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    Dinesh khalmaniya 1 Best Answer

    option C Explanation- vrms √3RT/M . According to problem T will becomes T/2 and M will becomes M/2 so the value of vrms  will increase by √4 = 2 times i.e. new root mean square velocity will be 2v.

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    got it?

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    Sir M = M/2 Q hwa ???

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    because molecule dissociate into two atoms

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    mass become half

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    Okay sir thank you .

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