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In van der Waals equation of state of the gas law, the constant b is a measure of

  • Option 1)

    intermolecular repulsions

  • Option 2)

    intermolecular attraction

  • Option 3)

    volume occupied by the molecules

  • Option 4)

    intermolecular collisions per unit volume.

 

Answers (2)

best_answer

As we learnt in

Vander waal equation for real gas -

\left (p+\frac{an^{2}}{v} \right )(V-nb)=nRT

- wherein

a, b : Vander waal Constants, P- Pressure, V- Volume, n- No. of moles, R- Gas Constant, T- Temperature

 

 

The constant b is a measure of volume of the molecule 

b=4N_{A}\times\frac{4}{3}\pi r^{3}

Correct option is 3.

 


Option 1)

intermolecular repulsions

This is an incorrect option.

Option 2)

intermolecular attraction

This is an incorrect option.

Option 3)

volume occupied by the molecules

This is the correct option.

Option 4)

intermolecular collisions per unit volume.

This is an incorrect option.

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Aadil

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