rates of reaction
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what is required for chemical reactions to take place
partials to collide in the right orientation with sufficient energy
what is activation energy
the minimum amount of energy partials need to have to react
what are the 2 formulas to measure rate of reaction
ROR = amount of reactants used / time ROR = amount of products formed / time
what are the 2 main factors that affect rate of reaction
• chemical factors • environmental factors
what does concentration refer to
how much of a substance is present in a given volume
what does a higher concentration mean for rate of reaction
higher conc = more partials in the space = more collisions = more chance of a reaction = ror increases
how does particle size and surface area affect rate of reaction
smaller partial = larger surface area in relation to volume = higher surface area = more collisions able to take place = increased rate of reactions
how does bond strength affect rate of reaction
stronger bonds = more energy to break = takes longer weaker bonds = break more easily = faster reactions
what do catalysts do
increase ror without being used up. thy provide a pathway with a lower activation energy
how does temp affect ror
higher temp = particles move faster = collide more often and with more energy = more reactions = higher ror
what is the affect on rate of reaction from 10°C temp rise
aprox doubles