Question

At S.T.P, the volume of $1\text{mole}$ of gas is measured to be $25\text{litres}$ then nature of gas and type of force dominating are

• A. Real gas with + ve deviation, repulsive force.
• B. Real gas with -ve deviation, attractive force.
• C. Real gas with +ve deviation, attractive force.
• D. Real gas with -ve deviation, repulsive force.

Answer 1

The correct option is A Real gas with + ve deviation, repulsive force.

$Z=\frac{V_{\text{real}}}{V_{\text{ideal}}}$
We know,
At S.T.P
$V_{\text{ideal}}=22.4\text{litres}$
$\therefore Z=\frac{25}{22.4}>1$
So, real gas with +ve deviation with repulsive force being dominating.