If `H_(2)` gas is made to adsorb on a surface, then the fraction of surface area of adsorbent covered by gas molecules is proportional to

Options

A. p
B. `p^(0)`
C. `p^(1//2)`
D. `p^2`

Answer

C

Explanation

When a diatomic gas adsorbs as atoms on the surface of a solid, Langmuir adsorption isotherm becomes:
`theta=x/m = ((kP)^(1//2))/(1+(kp)^(1//2))`.