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Question
A gas behaves more closely as an ideal gas at
Options
low pressure and low temperature
low pressure and high temperature
high pressure and low temperature
high pressure and high temperature.
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Solution
low pressure and high temperature
At low pressure, the concentration of gas molecules is very low. Hence, the kinetic assumption that the size of the molecules can be neglected compared to the volume of the container applies.
At high temperature, molecules move very fast. So, they tend to collide elastically and forces of interaction between the molecules minimise. This is the required idea condition.
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