Rate of reaction

Question 1

What are the 5 factors, which affect the rate of reaction?

Answer 1

1. Temperature
2. Surface area of solids
3. Concentration of solutions
4. Pressure/Volume
5. Catalyst

Question 2

What is the collision theory?

Answer 2

Reacting particles need to collide with enough energy to cause a reaction to take place

Question 3

What is activation energy?

Answer 3

The minimum amount of energy required for a reaction to take place.

Question 4

You can increase the rate of reaction by:

Answer 4

1. increasing the frequency of reacting particles colliding
2. increasing energy the particles have when colliding

Question 5

Question : How does temperature affect the rate of reaction and why?

Answer 5

Answer:

Increase in temperature , means that the particles have more kinetic energy, therefore having more frequent and more successful collisions, in a given time.

This is because the particles have more energy, when colliding, so they are more successful, in a given time.

More collisions, would result in a reaction occurring faster

Question 6

Question: How does a catalyst impact the rate of reaction and why?

Answer 6

Answer:
1. Catalyst increases the rate of reaction.

2. The use of a catalyst results in the particles being provided with an alternative pathway, which requires a lower activation energy [ minimal energy required to make particles react together].
3. This results in the particles then having enough energy to collide. This results in more successful collisions, increasing the rate of reaction.

Question 7

Question : How does increasing the surface area impact the rate of reaction and why?

Answer 7

Answer: When increasing surface area, more of the reactant is available to be reacted with in conjunction at the same time.

Question 8

What can be used used catalytic converters?

Answer 8

Platinum and palladium

Question 9

What is Le chatelier’s principle?

Answer 9

Whenever a change in conditions is introduced to a system of equilibrium, the position of equilibrium shifts to oppose/cancel out the change.

Question 10

Question: How does concentration and pressure impact the rate of reaction and why?

Answer 10

Answer:
1. Concentration and pressure increases the rate of reaction.
2. An increase in concentration and pressure, mean an increase in particles in a given volume, would result in more frequent collisions, and so more successful collisions, in a given time.