Unit 5 - Kinetics Flashcards Preview

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Flashcards in Unit 5 - Kinetics Deck (17)
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1
Q

What is kinetics

A

Study of reaction rates

2
Q

What is the equation for the rate

A

(Change in conc) / (Change in time)
___________________________
Stoichiometric coefficient

3
Q

The rate is always

A

Negative

4
Q

What is the equation for rate involving the concentrations

A

k [A}^x [B]^y

5
Q

What is k

A

the rate constanct

6
Q

Is the rate constant constant?

What determines the rate constant

A

No

Depends on several factors including temperature and catalystss

7
Q

A zero order reaction

A

Constant half life
Double concentration = no rate change
Units ms-1

8
Q

A first order reaction

A

t1/2 decreases
Double conc = double rate
Units are s-1

9
Q

A second order reaction

A

t1/2 increases
Double conc - square the rate
Units are m-1s-1

10
Q

What is the half life or a first order reaction

A

ln2/k`

11
Q

Approx ln2 =

A

0.693

12
Q

What is the half life of a second order reaction

A

1/(K [A0])

13
Q

What is the half life of zero order reaction

A

[A0] / 2k

14
Q

Beta decay is the

A

Loss of electrons

15
Q

What is the integrated rate law of a first order reaction

A

Ln[a]t = -kt + ln[A]o

16
Q

What is the integrated rate law of a second order reaction

A

kt = 1/[A]t - 1/[A]o

17
Q

What is the integrated rate law of zero order reactions

A

[A]t - [A]o = -kt