rate of reaction - effect of concentration on rate

Question 1

what is the collision theory?

Answer 1

The theory where chemical reactions can only take place when the reacting particles collide with each other. collisions must have sufficient energy

Question 2

what is rate of reaction determined by?

Answer 2

frequency of successful collisions

Question 3

start of a reaction time graph

Answer 3

steep line as large number of collisions per second due to lots of reactants

Question 4

middle of reaction time graph

Answer 4

reaction slows down due to less reactant molecules so fewer number of collisions per second

Question 5

end of reaction time graph

Answer 5

no collisions

Question 6

What happens to number of collisions when concentration increased?

Answer 6

more collisions so faster rate of reaction

Question 7

what happens as we increase concentration?

Answer 7

rate of reaction becomes proportional to concentration

Question 8

higher concentration =

Answer 8

steeper line, faster reaction. more product at the end as more reactant molecules so fewer