Paper 2- Unit 6b Rates of reaction Flashcards
how do you calculate the rate of reaction
1) product make /time in seconds
2) reactants used/ time in seconds
2 factors that effect the rate of a reaction
FREQUENCY of collisions
Energy of the particles
The activation energy is…
minimum amount of energy
for a reaction to take place
Catalysts …….. the rate of reaction but is not…
Catalysts increase the rate of reaction
but is not used up
Explain how catalysts work
Lower the activation energy for a reaction
more collisions results in reactions
Effect affect of temperature on rate
Speeds up
particles react more energetically
with increases frequency of collisions
so more have the activation energy for a reaction
Explain affect of concentration on rate
more particles in the same space
more crowded
higher frequency of collisions
speeds up rate of reaction
Equipment used to measure time
stop clock
Equipment used to measure mass
balance in g
Equipment used to measure volume of gas
1) gas syringe
2) inverted (upside down) measuring cylinder in a water trough
Equipment used to measure temperature
(digital) thermometer
Equipment used to measure out volumes of a liquid
Measuring cylinder
Equipment used to measure pH
pH probe
How do we increase the surface area of a solid?
Grind it up
cut it into smaller pieces
Equipment used to keep temperature constant
water bath
