What is the primary factor affecting the rate of a surface reaction?

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Question: What is the primary factor affecting the rate of a surface reaction?

Options:

Correct Answer: Surface area of the reactants

Solution:

The rate of a surface reaction is primarily affected by the surface area of the reactants available for reaction.

What is the primary factor affecting the rate of a surface reaction?

What is the primary factor affecting the rate of a surface reaction?

Step 1: Understand that a surface reaction occurs at the interface between two phases, like solid and gas or solid and liquid.
Step 2: Recognize that the more surface area available for the reactants, the more places there are for the reaction to occur.
Step 3: Realize that if you increase the surface area (for example, by grinding a solid into a powder), the reaction can happen faster.
Step 4: Conclude that the primary factor affecting the rate of a surface reaction is the surface area of the reactants.

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