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COMEDK2012ChemistrySurface Chemistry

Which of the following is not true for the adsorption of a gas on a solid?

Options

  1. AIncrease in temperature favors adsorption
  2. BEnthalpy change is negative
  3. CAdsorption is more specific
  4. DEntropy change is negative

Correct answer

A. Increase in temperature favors adsorption

Step-by-step solution

Adsorption of a gas on a solid is exothermic process as during this process condensation of gas take place. According to Le-Chatelier principle, increase in temperature favors desorption. Option (a) is not a true statement.

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