SC18a Rates of Reactions

Question 1

rate of reaction?

Answer 1

the speed at which reactants are turned into products

Question 2

when are reaction rates usually fastest and why?

Answer 2

usually fastest at the start of the reaction because that’s when the concentration of reactants is highest.

Question 3

how can we measure how fast the rate of a reaction is? 3

Answer 3

~measure the volume of gas produced using a gas syringe
~measure the change in mass as the gas escapes using a balance
~measure the time taken to produce a certain volume of gas produced