chapter 7 - rates

Question 1

collision theory

Answer 1

for a successful reaction to occur molecules must collide with correct orientation and enough energy to achieve activation energy

Question 2

rate of reactions

Answer 2

is the change in concentration of reactants, or products per unit of time
rate = delta [P] / delta t

Question 3

temperature

Answer 3

increase in average kinetic energy of particles
- increase frequency and energy
- increased proportion of successful collisions

Question 4

concentration, surface area, gas pressure

Answer 4

increase number of particles available to react in a given volume
- increase frequency of collisions

Question 5

catalyst

Answer 5

provides alternate reaction pathway with lover activation energy, so greater proportion of particles have enough energy to react
(greater proportion of successful collisions)