Question

During adsorption

• A. T$\Delta$S is positive
• B. $\Delta$H -T$\Delta$S is negative
• C. $\Delta$H is positive
• D. T$\Delta$S and $\Delta$G become zero

Answer 1

Answer: (B)

$\Delta$H -T$\Delta$S is negative

Answer 2

?G = ?H - T?S. Adsorption is spontaneous process ?G should be negative. Hence ?H - T?S should be negative.