Kinetics

Question 1

What is kinetics a study of

Answer 1

Rates of reaction

Question 2

What is the rate of a reaction affected by

Answer 2

The concentration of the reactants
The temperature
The presence of a catalyst

Question 3

For a reaction to occur what must the reactants have

Answer 3

The correct orientation
Collide with a minimum collision energy (the sun or the kinetic energies of the colliding particles) to break bonds in the reactants

Question 4

What is activation energy

Answer 4

The minimum energy that colliding molecules must have before they can react
Ea

Question 5

What does the maxwell-boltzmann distribution curve show

Answer 5

The distribution of molecular energies in a gas

Question 6

What does an increase in temperature do to the rate of reaction

Answer 6

Increases the number of molecules with sufficient energy to overcome the activation energy and react when the collide.
Overall increases the rate of reaction

Question 7

What does a small temp increase lead to

Answer 7

A large increase in rate

10K increase approximately doubles the rate for reactions near to room temp

Question 8

What does an increase in conc do to the rate of reaction

Answer 8

Increases the rate since more reactants have sufficient energy to overcome the activation energy and react when they collide

Question 9

What is a catalyst

Answer 9

A substance which alters the rate of reaction without being used up itself, by providing an alternative route with a lower activation energy