kinetics

Question 1

what is meant by the collision theory

Answer 1

a reaction can only occur when particles collide with enough sufficient energy to break bonds with the correct orientation

Question 2

define rate of reaction

Answer 2

change in concentration of reactants per unit of time

Question 3

define activation energy

Answer 3

minimum amount of energy needed for a reaction to occur

Question 4

what does the maxwell boltzman distribution curve show

Answer 4

distribution of kinetic energy of molecules in a gas or liquid at a given temp

Question 5

what is the area under a maxwell boltzman distribution curve

Answer 5

number of particles

Question 6

how does increase in temp imact a maxwell boltzman curve

Answer 6

increase in temp, Ke increases, more particles have enough Ea, more successful collisions, graph shifts to the right

Question 7

how does decrease in temp impact a maxwell boltzman graph

Answer 7

decrease in temp, Ke decreases, less particles have enough Ea, less successful collisions, graph shifts to the left

Question 8

how does concentration affect the rate of reaction

Answer 8

higher number of particles in a given volume, more frequent and successful collisions

Question 9

how does a catalyst work

Answer 9

they lower the Ea by providing an alternative route without being used up

Question 10

how does surface area impact rate of reaction

Answer 10

more points of contact for the particles to collide, more frequent and successful collisions.