A gas at 350 K and 15 bar has molar volume 20 percent smaller than that for an ideal gas under the same conditions. The correct option above the gas and its compressibility factor (Z) is :

Options

A. `Z gt 1` and attractive forces are dominant
B. `Z gt1` and repulsive forces are dominant
C. `Z lt 1` and attractive forces are dominant
D. `Z lt 1`and repulsive forces are dominant

Answer

C

Explanation

Compressibility factor `(Z) = (V_("real"))/(V_("ideal"))`
`because V_("real") lt V_("ideal") ,` Hence `Z lt 1`
When `Z lt 1` attractive force are dominating and gases will liquefy easily.