rate equation 3.1.9 in papers 2 + 3

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

define rate of reaction

Back (Answer)

the measure of change in amount over time

Front (Question)

what factors affect rate?

Back (Answer)

• tempreture • catalyst • pressure • concentration

Front (Question)

what does it mean if the rate is zero order?

Back (Answer)

the change in concentration has no effect on the rate

Front (Question)

what does it mean if the rate has first order?

Back (Answer)

the concentration is directly proportional to the rate

Front (Question)

what does it mean when concentration has second order?

Back (Answer)

the concentration is directly proportional to the rate squared

Front (Question)

whats the rate equation?

Back (Answer)

rate k= –.——— wtv concentration

Front (Question)

what is the rate determining step?

Back (Answer)

• the slowest step

Front (Question)

when is measuring volume of gas used?

Back (Answer)

product is a gas

Front (Question)

when is measuring the loss of mass used?

Back (Answer)

gas product from a solid reactant

#10

Front (Question)

when is titration used?

Back (Answer)

product or reactants need to be alkaline or acidic

#11

Front (Question)

when is calorimetry used?

Back (Answer)

reactant or product is coloured or a percipitate is formed

#12

Front (Question)

when is pH measurements used?

Back (Answer)

acid or base in a reactant or product or both

#13

Front (Question)

how can you tell an experimemt is using intial rate method?

Back (Answer)

• a series of experiments is used

#14

Front (Question)

how can you tell an experiment is using continuous rate method?

Back (Answer)

• one experiment is carried out • monitored throughout

#15

Front (Question)

how do you carry out continuous rate method?

Back (Answer)

• Measure 50 cm3 of the 1.0 mol dm–3 hydrochloric acid and add to conical flask. • Set up the gas syringe in the stand • Weigh 0.20 g of magnesium. • Add the magnesium ribbon to the conical flask, place the bung firmly into the top of the flask and start the timer. • Record the volume of hydrogen gas collected every 15 seconds for 3 minutes.

#16

Front (Question)

what is the arrhenius equation?

Back (Answer)

k = Ae^-Ea/RT

#17

Front (Question)

what does K stand for?

Back (Answer)

rate constant

#18

Front (Question)

what does A stand for?

Back (Answer)

• arrhenius constant • has same units as K

#19

Front (Question)

what does R stand for?

Back (Answer)

gas constant

#20

Front (Question)

what does Ea stand for?

Back (Answer)

• activation energy • is negative • units is Jmol-1

#21

Front (Question)

what does T stand for?

Back (Answer)

• tempreture units is K

#22

Front (Question)

what does e stand for?

Back (Answer)

mathmatical function

#23

Front (Question)

how does the y=mx+c equate to the arrhenius equation?

Back (Answer)

• y = in(k) • m = -Ea/R • x = 1/T • c = in(A)

#24

Front (Question)

why would a step be considered the rate determining one?

Back (Answer)

• contains all the species in the rate equation