kinetics

Question 1

the rate of a chemical reaction can be described as

Answer 1

1) the decrease in concentration of one the reactants per unit time.
2) the increase in concentration of one of the products per unit time.

unit of rate is moldm^-3s^-1

Question 2

collision theory

include what is required for the particles

Answer 2

collision between particles is required for reaction

for a collisin to cause a reaction the particles must:
a)collide with sufficient energy (activation energy)

b) have the correct orientation during collision so that it is the reactive sites of the particles that come into contact

Question 3

Kinetic Theory

Answer 3

all particles are continually moving as the temperature increases the particles gain energy and move faster

the average kinetic energy of the particles is proportional to the temperature in Kelvin

Question 4

5 ways to measure rates

Answer 4

1) mass
2) volume of gas produced
3) colour
4) pH
5) Electrical conductivity

Question 5

factors which affect rate of reaction

Answer 5

1. surface area of reactants
2. concentration
3. temperature
4. using a catalyst
   (a catalyst provides an ALTERNATIVE PATHWAY for the reaction with a LOWER ACTIVATION ENERGY)