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A gas is said to behave like an ideal gas when the relation PV / T = constant  . When do you expect a real gas to behave like an ideal gas ?

  • Option 1)

     When the temperature is low

  • Option 2)

    When both the temperature and pressure are low

  • Option 3)

    When both the temperature and pressure are high

  • Option 4)

     When the temperature is high and pressure is low

 

Answers (1)

As we learnt in 

Behaviour of real gas -

combined Volume of molecules can not be neglected with respect to volume of beaker .

-

PV=nRT is the ideal gas equation it is allowed when the temperature is high and pressure is low.

 


Option 1)

 When the temperature is low

Incorrect

Option 2)

When both the temperature and pressure are low

Incorrect

Option 3)

When both the temperature and pressure are high

Incorrect

Option 4)

 When the temperature is high and pressure is low

Correct

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