Question

Classify the actions based on how they could affect a reaction rate.

Answer 1

Add a catalyst
- would increase rate of reaction;
Because adding catalyst would lower activation energies.

Decrease the concentration of a reactant
- would decrease rate of reaction; because there would be less molecule

Decrease the surface area of a solid reactant
 - decrease rate of reaction; less collisions because more particles would become isolated

Increase the temperature
- Would increase reaction; Because it would accelerate the movement of the particles and make them colliding faster

Answer 2

1. Add a catalyst

• The addition of a catalyst would lead to an increase in the rate of reaction.

• The catalyst brings about lower activation energies.

2. Decrease the concentration of a reactant

• The reduction in the concentration of the reactant causes a reduced  rate of reaction

• This is due to the fact that there is less molecule

3. Decrease the surface area of a solid reactant

• Decreasing the surface area of the solid causes decrease rate of reaction

• The collisions would be less because of particles isolation.

4. Increase the temperature

• A temperature increase leads to increased reaction
• It causes faster movement of particles and collisions.

Complete question

Classify the actions based on how they could affect a reaction rate.

-decrease the surface area of a solid reaction

-add a catalyst

-increase the temperature

-decrease concentration of reactant

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