rate of reaction

Question 1

both equations for rate of reaction

Answer 1

meanRoR = quantity of reactant used / time taken

mean RoR= quantity of product formed/time taken

Question 2

what 3 units can measure RoR

Answer 2

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

Question 3

list 5 factors that affect RoR

Answer 3

temperature 
concentration
pressure
surface area
catalyst

Question 4

what must happen for a reactant to occur

Answer 4

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

Question 5

how does pressure affect RoR

Answer 5

increased number of collisions between reactants

increases rate of reaction

Question 6

how does temperature affect RoR

Answer 6

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

Question 7

how does SA increase RoR

Answer 7

smaller particles inc RoR

inc SA means more collisions in surface so inc RoR

Question 8

how do catalysts affect RoR

Answer 8

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

Question 9

what is the first step of a titration equation

Answer 9

find moles by doing

moles = (mass x volume) / 1000

Question 10

what is the second step in a titration equation

Answer 10

do ratio, either 1:1 or 2:1

Question 11

what is the third step in a titration equation

Answer 11

calc concentration by doing

conc= (molesx1000) /volume

Question 12

what is activation energy

Answer 12

minimum amount of energy needed for a successful reaction