Question

Which of the following is an example of physisorption?

Options

• Adsorption of oxygen gas on platinum.

• Adsorption of hydrogen gas on nickel catalyst.

• Adsorption of carbon monoxide on tungsten.

• Adsorption of acetic acid in solution on activated charcoal.

Answer 1

Adsorption of acetic acid in solution on activated charcoal.

Explanation:

There is no chemical link formed between the adsorbate and the adsorbent in physisorption.