Question

Place an X next to each action that would most likely increase the reaction rate.

Answer 1

Answer:

2.__ Dissolving two solids in water before mixing them together.

4.__ Grinding a solid into fine particles.

5.__ Adding an enzyme catalyst.

Explanation:

The rate of reaction is the measure of the speed of a chemical reaction.

Some factors affects the rate of reactions such as pressure, temperature, concentration, surface area, presence of catalyst.

• Reactions in liquid medium are much faster than those between solids because there is a flow of substances. As they come in contact with one another, collision begins to take place.
• Grinding a solid into fine particles increases the surface area. An increase in surface area increases the rate of reaction.
• Adding an enzyme catalyst lowers the activation energy and reduces the energy barrier that must be overcome before a reaction takes place.