Question

Gas with higher compressibility factor will have more force of attraction b/w the molecules explain.

Answer 1

• The compressibility factor (Z) is a useful thermodynamic property for modifying the ideal gas law to account for behavior of real gases.It is a measure of how much the thermodynamic properties of a real gas deviate from those expected of an ideal gas. It may be thought of as the ratio of the actual volume of a real gas to the volume predicted by the ideal gas at the same temperature and pressure as the actual volume.
  
• For an ideal gas

$PV=nRT$

Or $PV$ = constant (for fixed mass and temperature)

Or $\frac{PV}{RT}$ = constant = Z

Here z is called compressibility factor.

For an ideal gas z=1

For non –ideal gas z is either greater than 1 or less than 1.

The value of z depends on the inter molecular forces present among the gas molecules.

For ideal gas it is assumed that there is no force of attraction or repulsion among the molecules of gas so its value is 1.

So we can tell gases with higher compressibility factor will have more force of attraction between them.