rate of reaction Flashcards

1
Q

both equations for rate of reaction

A

meanRoR = quantity of reactant used / time taken

mean RoR= quantity of product formed/time taken

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2
Q

what 3 units can measure RoR

A

g/s (mass)
cm^3 /s (volume)
mol/s (moles)

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3
Q

list 5 factors that affect RoR

A
temperature 
concentration
pressure
surface area
catalyst
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4
Q

what must happen for a reactant to occur

A

particles must collide with each other with sufficient energy to reach the activation energy

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5
Q

how does pressure affect RoR

A

increased number of collisions between reactants

increases rate of reaction

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6
Q

how does temperature affect RoR

A

thermal-> kinetic energy means particles move faster
reactants how collide faster and with more energy
so more collisions have sufficient energy to react

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7
Q

how does SA increase RoR

A

smaller particles inc RoR

inc SA means more collisions in surface so inc RoR

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8
Q

how do catalysts affect RoR

A

reduce activation energy so less energy needed for successful collisions
faster RoR

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9
Q

what is the first step of a titration equation

A

find moles by doing

moles = (mass x volume) / 1000

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10
Q

what is the second step in a titration equation

A

do ratio, either 1:1 or 2:1

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11
Q

what is the third step in a titration equation

A

calc concentration by doing

conc= (molesx1000) /volume

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12
Q

what is activation energy

A

minimum amount of energy needed for a successful reaction

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