Chapter 18 - Reaction rates of Equilibrium Flashcards

1
Q

rate

A

is a measure of speed of any change that occurs within an interval of time

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2
Q

collision theory

A

atom, ect. can react to form products when they collide

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3
Q

activation theory

A

the minimum energy needed so colliding particles can react.

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4
Q

activated complex

A

an unstable arrangement of atoms that form momentarily at the peak of the activation-energy barrier (also known as the transition state )

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5
Q

inhibitor

A

a substance that breaks the catalyst

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6
Q

reversible reaction

A

when the conversion of reactants to products and the other way around, happen at the same time

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7
Q

chemical equilibrium

A

when the rates forward and backward are equal

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8
Q

Le Chátelier’s principle

A

If stress is applied to a system in equilibrium, the system changes to relieve the stress

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9
Q

equilibrium constant

A

Keq={C}^c x{D}^d / {A}^a x {B}^b

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10
Q

common ion

A

an ion that is found in both salts of a solution

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11
Q

free energy

A

energy that is ready to work

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12
Q

spontaneous reaction

A

occur naturally and favor the formation of products at specific conditions

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13
Q

nonspontaneous reaction

A

do not occur naturally and does not favor the formation of products at specific conditions

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14
Q

entropy

A

the measure of disorder

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15
Q

law of disorder

A

the lowest possible energy for a system

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16
Q

Gibbs free-energy change

A

the maximum amount of energy that can be doubled to another process to so useful work

17
Q

rate law

A

the rate of reaction in terms of the concentration of the reactants

18
Q

specific rate constant

A

(k) if k is large, the products form quickly; small they form slowly

19
Q

first order reaction

A

the reaction rate is directly proportional to the concentration of one reactant

20
Q

elementary reaction

A

reactants are converted to products in a single step

21
Q

reaction mechanism

A

the series of steps that occur in a elementary reaction

22
Q

intermediate

A

the product of one of the steps in the reaction mechanism