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what is the calculation for rate?
any rate = change in quantity / time
what is used to turn solution cloudy in the cross flask practical?
hydrochloric acid + sodium thiosulphate
how can we increase rate of reaction?
increase surface area
increase temperature
what happens when surface area is increased?
particles collide more frequently
what happens when temperature is increased?
particles move faster and collide with greater force
what does a catalyst do?
reduces activation energy