Which of the following statements is not true with respect to chemisorption?(a) Depends on nature of adsorbate and adsorbent(b) Has a large heat of adsorption(c) Forms a unimolecular layer(d) Occurs at low temperatureI have been asked this question in an interview for job.My question is from Surface Chemistry in chapter Surface Chemistry of Chemistry – Class 12

Which of the following statements is not true with respect to chemisor

1.	Which of the following statements is not true with respect to chemisorption?(a) Depends on nature of adsorbate and adsorbent(b) Has a large heat of adsorption(c) Forms a unimolecular layer(d) Occurs at low temperatureI have been asked this question in an interview for job.My question is from Surface Chemistry in chapter Surface Chemistry of Chemistry – Class 12
Answer» Right choice is (d) Occurs at low temperature Explanation: CHEMISORPTION is a kind of adsorption that involves a chemical reaction between the adsorbent and adsorbate, resulting in the FORMATION of a chemical bond between the two. Since a bond is to be formed, chemisorption is highly DEPENDENT on the reactants(adsorbate and adsorbent) and has a large HEAT of adsorption. Also, since it involves bond formation, it cannot be multi-layered. Chemisorption is FAVOURED to occur at high temperature.

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