Question

At which of the following temperature - pressure condition, the deviation of a gas from ideal behaviour is expected to be minimum ?

• A. $250\text{K},1\text{atm}$
• B. $350\text{K},1\text{atm}$
• C. $250\text{K},2\text{atm}$
• D. $350\text{K},4\text{atm}$

Answer 1

The correct option is B $350\text{K},1\text{atm}$

Causes of deviations from ideal behaviour is due to the following assumptions:

$\left(1\right)$. Volume occupied by gas molecules is negligible as compared to volume occupied by the gas.

$\left(2\right)$. The forces of attraction between gas molecules are negligible.

A real gas behaves as an ideal gas at low pressures and high temperature.

So, option $\left(b\right)$ is correct.