Chemistry Reaction Rates

Question 1

What are the two ways of measuring the rate of a reaction?

Answer 1

The rate at which reactants are used up
The rate at which products are made

Question 2

What are the 5 factors affecting rate of reaction?

Answer 2

Concentration of solutions
Temperature
Surface area of solid reactants
Catalysts
Pressure

Question 3

What is collision theory?

Answer 3

That the collisions between particles must be of sufficient energy (equal or greater than the total energy) for a successful reaction

Question 4

What is the activation energy?

Answer 4

The total amount of energy required for a reaction to occur

Question 5

How does a catalyst work?

Answer 5

It provides an alternative route for the reaction that has a lower activation energy than for an uncatalysed reaction

Question 6

What are examples of good catalysts?

Answer 6

Transition metals or transition metal compounds, often
Palladium, platinum and rhodium
Manganese oxide in decomposition of H202

Question 7

What are the units for rate of reaction?

Answer 7

Collisions per second

Question 8

How does temperature increase the rate of reaction?

Answer 8

Particles have more kinetic energy
Particles move faster and have more energy than activation energy
More frequent successful collisions