Chapter U5, Problem C20.1RE

Interpretation Introduction

Interpretation: Seven ways that could speed up a chemical reaction to be listed and explained. 

Concept introduction: Rate of a reaction is the change in amount of products or reactants per unit time.

  $\text{Rate}=\frac{-\text{Change}\text{in}\text{reactants}}{\text{Change}\text{in}\text{time}}$

Answer to Problem C20.1RE

Seven ways that could speed up a chemical reaction is as follows:

1. Catalyst
2. Temperature
3. Surface area
4. Concentration
5. Energy
6. Mixing
7. Pressure

Explanation of Solution

The ways that can increase rate of reaction is as follows:

1. Catalyst: Catalyst can increase and decrease rate of the reaction.
2. Temperature: Kinetic energy of the reactant particle increases on increasing temperature.
3. Surface area: Surface area of reactant affects rate of reaction.
4. Concentration: Rate of the reaction increases on increasing concentration.
5. Energy: Energy increases the rate of the reaction.
6. Mixing: Reaction rate increases when reactants are mixed well
7. Pressure: On increasing pressure rate of the reaction increases.

Conclusion

Factors that affects rate of reactions are pressure, energy, mixing, concentration, surface area, temperature, catalyst, etc.