Question

How does a rate of reaction change if we use the powdered form of reactants in place of pellets of reactants?

• A. The rate of the reaction decreases.
• B. The rate of the reaction increases.
• C. The rate of the reaction remains the same.
• D. The rate of the reaction first decreases then increases.

Answer 1

The correct option is B

The rate of the reaction increases.

The rate of the reaction determines the speed of the reaction. There are many factors which affect the rate of a reaction. The surface area of solid is one such factor which affects it. With the increase in the surface area of solid, the number of molecules undergoing effective collision also increases. This results in an increase in the rate of reaction.

Hence, when we use the powdered form of reactants in place of pellets of reactants, the rate of reaction increases as the surface area exposed is more in powdered form.