A real gas behaves like an ideal gas if its - Vidyadip

MCQ

A real gas behaves like an ideal gas if its

A
pressure and temperature are both high
B
pressure and temperature are both low
C
pressure is high and temperature is low
✓
pressure is low and temperature is high

✓

Answer

Correct option: D.

pressure is low and temperature is high

d
Real gas obeys vanderwaals equation

$\left( p +\frac{ n ^2 a }{ V ^2}\right)( V - nb )= nRT$

at high temperature and low pressure

Van der waal equation becomes approximately $PV$ $= nRT$

Hence gases behave ideally at high temperature and low pressure.

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