Kinetics Flashcards
(17 cards)
concentration effect
increases number of reactant particles in a given volume and so increases the frequency of collisions between particles, so more successful collisions in a given time
rate of reaction
change in conc/time
activation energy
minimum energy required for reaction to occur
pressure effect
increase means more particles in a given volume, therefore more successful collisions in a given time
surface area effect
increased SA increases the frequency of collisions between particles, therefore more successful collisions in a given time
temperature effect
increase in temp increases the rate of reaction, particles have more energy at a higher temperature, meaning many more particles with energy greater than the activation energy, therefore more successful collisions in a given time
why do reactions always go to completion
molecules transfer energy when colliding so they will eventually reach the activation energy
area under curve
total number of molecules
name of graph
maxwell boltzmann distribution
increase in temp effect on maxwell boltzmann
decrease in temperature effect on maxwell boltzmann
catalyst
substance that increases the rate of reaction without being used up
how does catalyst work
provides an alternative route which has a lower activation energy than the unanalysed route
method for measuring the time taken for a concentration to reach a fixed amount
rate of reaction equation in practical
1/time because concentration is fixed
method for recording the concentration at regular time intervals
