kinetics Flashcards
what is rate of reaction
the change of conc/amount of reactant or product per unit time
how to calculate rate of reaction
amount of reactant used/ product made
divided by
time
what is the collision theory
for a reaction to occur the particles must collide in the right direction
they must also have the minimum amount of kinetic energy- activation energy
what is activation energy
the minimum amount of energy required for a reaction to occur is called the activation energy
what does Maxwell Boltzmann distribution show
energy in gas particles
why does graph start at 0,0
no particles have zero kinetic energy
the are under curve =
total number of molecules
highest peak=
the most likely energy of a particle of a particle in a sample
where is the mean energy on a graph
slightly right to peak
what effects the rate of reaction
temperature- higher kinetic energy
concentration+pressure- closer together
catalysts
how does temperature increase effect Maxwell graph
curve shifts to right
peak is lower
area under curve overall is same
area under curve beyond activation energy increases
how do catalysts affect rate of reaction
a substance that increases rate of reaction by providing an alternative pathway that has a lower activation energy
how can rate be measured in experiments
how long it takes for precipitate to form
amount of mass lost
volume of gas produced
how to measure how long precipitate forms
