TS EAMCET · Chemistry · Surface Chemistry
Which of the following statements is/are not correct? (A) Adsorption is accompanied by decrease in enthalpy as well as decrease in entropy of the system. (B) Gases, which can react strongly with adsorbent show chemisorption. (C) When the value of the slope of the Freundlich isotherm is non-zero, adsorption is independent of pressure. (D) Gold number of potato starch is 0.15 .
- A \(A, D\)
- B \(B, C\)
- C \(\mathrm{A}, \mathrm{C}\)
- D \(C, D\)
Answer & Solution
Correct Answer
(D) \(C, D\)
Step-by-step Solution
Detailed explanation
(A) Adsorption is accompained by decrease in enthalpy as well as in entropy of the system \(\Delta G=\Delta H-T \Delta S\) and adsorption is an exothermic process [ thus has \(\Delta H=(-)\) ve, i.e. decreases] and randomness, i.e. ( \(\Delta\) S) also decreases because after…
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