Question

For adsorption of gas on a solid, the plot of log x/m vs log P is linear with slope equal to: (n being whole number)

• A. K
• B. log k
• C. n
• D. 1/n

Answer 1

The correct option is D 1/n

For adsorption of a gas on the surface of a solid, the extent of adsorption (x/m) varies with P as given below:

$\frac{x}{m}=k(P{)}^{1/m}$

where n is a whole number

$\log \frac{x}{m}=\log k+\frac{1}{n}\log P$

$\therefore$ Plot of $\log \frac{x}{m}$ vs log P is linear with a slope of (1/n).