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Chemistry > Rate, equilibrium > Flashcards

Rate, equilibrium Flashcards

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1
Q

Rate of reaction

A

Change in concentration per unit time

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2
Q

Zero order

A

rate is unaffected by changing the concentration of A

To the power of zero

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3
Q

First order

A

Rate is directly proportional to concentration

To the power of one

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4
Q

Second order

A

Rate is proportional to concentration squared

To the power of 2

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5
Q

Overall order is the…

A

Sum of the powers

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6
Q

Half-life

A

Time taken for the concentration of a reactant to reduce by half

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7
Q

Arrhenius plot

A

Is a graph of ln k = lnA - Ea/R x 1/T

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8
Q

Homogeneous equilibrium

A

Is an equilibrium in which all the species making up the reactants and products are in the same physical state

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9
Q

Heterogeneous equilibrium

A

Is an equilibrium in which all the species making up the reactants and products are in different physical state.

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10
Q

Mole fraction

A

The measure of how much of a given substance is present in a reaction mixture

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11
Q

Partial pressure

A

The pressure an individual gaseous substance would exert if it occupied a whole reaction vessel

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12
Q

Bronstead-lowry acid

A

proton, H+ donor

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13
Q

Bronstead-lowry base

A

proton, H+ acceptor

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14
Q

strong acid

A

Acid that fully dissociates in solution

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15
Q

weak acid

A

Acid that partially dissociates in solution

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16
Q

rate constant

A

constant that links rate of reaction with concentration of the reactants

17
Q

rate equation

A

rate = k[A]x[B]y[C]z

18
Q

using half life to find rate constant

A

k = ln2/t1/2

19
Q

Arrhenius plot

A

see book for explanation

20
Q

Homogeneous equilibrium

A

All species are in the same physical state

21
Q

Heterogeneous equilibrium

A

Species are in different state

22
Q

Equilibrium Law

A

aA+bB = cC+dD

Chemistry (10 decks)

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