18.3 Rate-concentration graphs

Question 1

how do you find rate constant of a zero order?

Answer 1

the rate constant

Question 2

what is the shape of a zero order rate concentration graph?

Answer 2

horizontal straight line

zero gradient

y-intercept is the rate constant

Question 3

what is the shape of a first order rate concentration graph?

Answer 3

straight line with a positive gradient

Question 4

what is the shape of a second order rate concentration graph?

Answer 4

upward curve with an increasing gradient

Question 5

what does the y-intercept of a rate concentration graph for zero order give?

Answer 5

the rate constant

Question 6

what is the instantaneous rate?

Answer 6

rate at t=0

draw a tangent at t=0
find the gradient

Question 7

what is the initial rates method?

Answer 7

way to find how the initial rate changes when the initial concentration is changed

you measure how long it takes for a precipitate/gas to form at different concentrations of the reactant;

Question 8

the longer a clock reaction is run for…

Answer 8

the less accurate the initial rate will be