Question

Which of the following parameters is correct regarding the adsorption of gases over solids?

• A. $\Delta S_{system}>0$
• B. $\Delta S_{surrounding}>0$
• C. $\Delta G>0$
• D. $\Delta H>0$

Answer 1

The correct option is B $\Delta S_{surrounding}>0$

For adsorption:
$\Delta H=$ negative
$\Delta S=$ negative
$\Delta G=$ negative
$\Delta S_{surroundings}=0$