Question

Although nitrogen does not adsorb on iron surface at room temperature, it adsorbs on the same surface at 83 K. Which one of the following statement is correct?

• A. At 83 K, there is formation of monomolecular layer
• B. At 83 K, there is formation of multimoleular layer
• C. At 83 K, nitrogen molecules are held by chemical bonds
• D. At 83 K, nitrogen is adsorbed as atoms

Answer 1

The correct option is B At 83 K, there is formation of multimoleular layer

At 83 K, there is physisorption and hence multimolecular.