According to kinetic theory of gases, at absolute zero of temperature

  • Option 1)

    Water freezes

  • Option 2)

    Liquid helium freezes

  • Option 3)

    Molecular motion stops

  • Option 4)

    Liquid hydrogen freezes

 

Answers (2)

As we discussed in concept

Kinetic energy of a gas due to translation per mole -

E= \frac{3}{2}PV

= \frac{3}{2}RT
 

- wherein

R = Universal gas constant

T = temperature of gas

 

 At absolute zero kinetic energy = 0 [\because \:K.E.\propto \:T]

\therefore molecular motion os gases stops.


Option 1)

Water freezes

This option is incorrect.

Option 2)

Liquid helium freezes

This option is incorrect.

Option 3)

Molecular motion stops

This option is correct.

Option 4)

Liquid hydrogen freezes

This option is incorrect.

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