Which of the following would result in an increase in the rate of a chemical reaction?
A.
Using a mortar and pestle to grind a solid reactant to a powder
B.
Decreasing the concentration of the reactant
C.
Adding more of the product
D.
Sealing the reaction in an airtight container
The correct answer is:
A. Using a mortar and pestle to grind a solid reactant to a powder.
Grinding a solid reactant to a powder increases its surface area, which allows more particles to collide and react, thus increasing the rate of the chemical reaction.