Topic 16-Kinetics II

Question 1

How do you know the overall order of reaction?

Answer 1

Sum of the orders of all reactants

Question 2

What is the half-life?

Answer 2

Time it takes for half the reactant to be used up (concentration halves)

Question 3

How can you tell if a graph shows a first order reaction?

Answer 3

The half lives are constant, always takes same amount of time for conc to half, and half-life independent of the concentration.

Question 4

The rate constant k is …….. dependent

Answer 4

temperature dependent

Question 5

What do we/ don’t we include in the rate equation?

Answer 5

Anything 0 order ISN’T included in the rate equation

concentrations of reactions are shown

Question 6

How can you judge whether a tangent has been drawn accurately?

Answer 6

Equal distances to the curve on each side of the point.

Question 7

The rate-determining step is the ……. step in a ……-….. reaction

Answer 7

slowest step in a multi-step reaction

Question 8

If a reactant doesn’t appear in the rate equation what does this mean regarding the RDS?

Answer 8

If reactant not in rate equation then ISN’T involved in the rate determining step

Question 9

The order of a reaction with respect to a reactant shows the number of …….. of ….. …… involved in or before the RDS

Answer 9

The number of molecules of that reactant in or before RDS