AP Chem Unit 5 Review

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Kinetics

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28 Terms

1

Kinetics

The study of the rates of a chemical reaction

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Concentration, temperature, surface area, catalysts, volume

What factors affect reaction rate?

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3

Ms⁻¹

Rate constant for 0th order

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s⁻¹

Rate constant for 1st order

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M⁻¹s⁻¹

Rate constant for 2nd order

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M⁻²s⁻¹

Rate constant for 3rd order

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Linear

Zero, first, and second order have ______ slopes on graphs

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[A]

Y-axis for Zeroth order

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ln [A]

Y-axis for First order

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10

1/ [A]

Y-axis for Second order

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11

Half-life

The amount of time it takes for a radioactive sample to decay to half its original amount

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First order

Half-life is always _____ order

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13

Exothermic

When reactants are higher than products it is a _____ reaction

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14

Endothermic

When products are higher than reactants it is a ______ reaction

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15

Exothermic

This is an _______ reaction

<p>This is an _______ reaction</p>
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16

Endothermic

This is an _______ reaction

<p>This is an _______ reaction</p>
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17

Decreases

As activation energy increases, reaction rate _______

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18

-Molecules must collide

-Molecules must collide with sufficient energy

-Molecules must collide with correct orientation

Parts of the collision theory are ______ , ______ , _______

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19

Speeds up a reaction

What does a catalyst do?

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20

Beginning ; end

A catalyst is in the _____ then _____ of a reaction mechanism

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End ; beginning

An intermediate is in the ______ then ______ of a reaction

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22

SLOWEST

The rate of a reaction can never be faster than its ______ step

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Highest

The slowest step has the _____ peak

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24

Intermediates

What CANNOT show up in an overall reaction?

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25

Reversible

When substituting use the ________ fast step

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26

Speeds up

A catalyst ______ a reaction

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27

Homogeneous Catalysis

A reaction in which catalysis is in the same phase as the catalyst

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Heterogeneous Catalysis

A reaction in which catalysis is in a different phase as the catalyst

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