Question

At high pressure, the entire surface gets covered by a monomolecular layer of the gas follows

• A. three-halved order
• B. second-order
• C. first-order
• D. zero-order

Hint:

At high pressures, the gas molecules behave like a monomolecular layer, which typically corresponds to a first-order reaction.

Answer 1

The Correct Option is C

Step 1: Understand the order of reaction at high pressure.
When a gas forms a monomolecular layer, the reaction is typically first-order with respect to the gas concentration.
Step 2: Conclusion.
The order of reaction in this case is first-order. Final Answer: \[ \boxed{\text{First-order}} \]