Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

AH Chemistry > 1.5 Equilibrium > Flashcards

1.5 Equilibrium Flashcards

You may prefer our related Brainscape-certified flashcards:
Chemistry 101 flashcards Periodic Table flashcards AP® Chemistry flashcards Organic Chemistry 101 flashcards
1
Q

Equilibrium

A

When the rate of the forward reaction equals the rate of the backwards reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

When the rate of the forward reaction equals the rate of the backwards reaction

A

Equilibrium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

In equilibrium, the composition of products and reactants remain ______

A

constant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

__________, the composition of products and reactants remain ______

A

In equilibrium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

In equilibrium, the ______________ remain constant

A

composition of products and reactants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

For an equilibrium to be established, what must happen

A

The reaction must take place in a closed environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Equilibrium equation (higher)

A

A + B → C + D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Increasing the concentration of A or B shifts equilibrium to the _____

A

Right

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Increasing the concentration of C or D shifts equilibrium to the ____

A

Left

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Increasing the concentration of _____ shifts equilibrium to the left

A

C + D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Increasing the concentration of ______ shifts equilibrium to the right

A

A + B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

________ the concentration of C or D shifts equilibrium to the left

A

Increasing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

_______ the concentration of A or B shifts equilibrium to the right

A

Increasing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

______ the pressure shifts equilibrium to where the higher number of moles

A

Decreasing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Decreasing the _________ shifts equilibrium to where the higher number of moles

A

Pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Decreasing the pressure shifts equilibrium to ______________________

A

where the higher number of moles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

_____________ the pressure shifts equilibrium to where the lower number of moles is

A

Increasing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Increasing the _________ shifts equilibrium to where the lower number of moles is

A

Pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Increasing the pressure shifts equilibrium to _________________________

A

where the lower number of moles is

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Exothermic reaction energy change

A

Negative, energy is released

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Negative, energy is released

A

Exothermic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Exothermic reaction:

_________ the temperature shifts equilibrium to the left

A

Increasing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Exothermic reaction:

Increasing the _____________ shifts equilibrium to the left

A

Temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Exothermic reaction:

Increasing the temperature shifts equilibrium to the _____

A

Left

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Exothermic reaction:

_____________ the temperature shifts equilibrium to the right

A

Decreasing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Exothermic reaction:

Decreasing the _________ shifts equilibrium to the right

A

Temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Exothermic reaction:

Decreasing the temperature shifts equilibrium to the ________

A

Right

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

______________ reaction:

Decreasing the temperature shifts equilibrium to the right

A

Exothermic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Endothermic reaction energy change

A

Positive

Energy is absorbed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

__________ reaction:

Increasing the temperature shifts equilibrium to the right

A

Endothermic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Positive, energy is absorbed

A

Endothermic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

__________ reaction:

Increasing the temperature shifts equilibrium to the right

A

Endothermic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

Endothermic reaction:

_________ the temperature shifts equilibrium to the right

A

Increasing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

Endothermic reaction:

Increasing the _________ shifts equilibrium to the right

A

Temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

Endothermic reaction:

Increasing the temperature shifts equilibrium to the ________

A

Right

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

_________ reaction:

Decreasing the temperature shifts equilibrium to the left

A

Endothermic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

Endothermic reaction:

_________________ the temperature shifts equilibrium to the left

A

Decreasing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

Endothermic reaction:

Decreasing the __________ shifts equilibrium to the left

A

Temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

Endothermic reaction:

Decreasing the temperature shifts equilibrium to the ____

A

Left

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Catalyst

A

speed up the rate of reaction by providing an alternative route through lowering the activation energy

41
Q

speed up the rate of reaction by providing an alternative route through lowering the activation energy

A

Catalyst

42
Q

Equilibrium and catalyst

A

Catalyst does not change position of equilibrium

43
Q

Equilibrium equation AH

A

aA + bB → cC dD

Small letters are number of moles

44
Q

Equilibrium constant, K

A

The ratio of concentration of products:reactants

45
Q

The ratio of concentration of products:reactants

A

Equilibrium constant

46
Q

When calculating equilibrium constants, what is value of pure solids (s) and liquids (l)

A

1 mol/l

47
Q

When calculating equilibrium constants, what is the value of aqueous solutions

A

What is stated in question

48
Q

Equilibrium if Kc o is less than 1

A

More reactants

Equilibrium lies to the left

49
Q

Value of K when there are more reactants

Equilibrium lies to the left

A

1

50
Q

Equilibrium when K=1

A

Equilibrium

51
Q

Value of K when equilibrium is reached

A

1

52
Q

Equilibrium when K is less than 1

A

More products than reactants

Equilibrium lies to the right

53
Q

Value of K when there is more products than reactants

Equilibrium lies to the right

A

K is more than 1

54
Q

Extent of reaction when Kc < 10^-3

A

Effectively no reaction

55
Q

Value of Kc when there is effectively no reaction

A

Kc < 10^-3

56
Q

Extent of reaction when Kc is 10^-3 to 10^3

A

Significant quantities of products and reactants at equilibrium

57
Q

Value of Kc when there is significant quantities of reactants and products at equilibrium

A

10^-3 to 10^3

58
Q

Extent of reaction value of Kc is > 10^3

A

Reaction is effectively complete

59
Q

Value of Kc when the reaction is effectively complete

A

Kc is > 10^3

60
Q

What is Kc for

A

Solutions

61
Q

K for solutions

A

Kc

62
Q

What is Kp for

A

Gases

63
Q

K for gases

A

Kp

64
Q

Homogeneous equilibrium

A

All the species are in the same gaseous phase

65
Q

All the species are in the same gaseous phase

A

Homogenous equilibrium

66
Q

Heterogeneous equilibrium

A

All the species are in more than one phase

67
Q

All the species are in more than one phase

A

Heterogeneous equilibrium

68
Q

Effect of pressure on equilibrium constant

A

No effect

69
Q

Effect of concentration on equilibrium constant

A

No effect

70
Q

Effect of temperature on K

A

Has an affect

71
Q

Catalyst effect on equilibrium

A

No affect

72
Q

What can affect K

A

Temperature

73
Q

What doesn’t affect K

A

Pressure
Concentration
Catalysts

74
Q

___________ reaction:

At higher temperatures, products are favoured so K will increase

A

Endothermic

75
Q

Endothermic reaction:

At _______ temperatures, products are favoured so K will increase

A

Higher

76
Q

Endothermic reaction:

At higher temperatures, ________ are favoured so K will increase

A

Products

77
Q

Endothermic reaction:

At higher temperatures, products are favoured so K will _______

A

Increase

78
Q

________ reaction:

At lower temperatures, products are favoured so K will decrease

A

Endothermic

79
Q

Endothermic reaction:

At _______ temperatures, products are favoured so K will decrease

A

Lower

80
Q

Endothermic reaction:

At lower ________, products are favoured so K will decrease

A

Temperature

81
Q

Endothermic reaction:

At lower temperatures, ______ are favoured so K will decrease

A

Products

82
Q

Endothermic reaction:

At lower temperatures, products are _________ so K will decrease

A

Favoured

83
Q

Endothermic reaction:

At lower temperatures, products are favoured so K will ________

A

Decrease

84
Q

_______ reaction:

A rise in temperature causes a decrease in K

A

Exothermic

85
Q

Exothermic reaction:

A _______ in temperature causes a decrease in K

A

Rise

86
Q

Exothermic reaction:

A rise in __________ causes a decrease in K

A

Temperature

87
Q

Exothermic reaction:

A rise in temperature causes a ________ in K

A

Decreases

88
Q

__________ reaction:

A fall in temperature causes an increase in K

A

Exothermic

89
Q

Exothermic reaction:

A ______ in temperature causes an increase in K

A

Fall

90
Q

Exothermic reaction:

A fall in ________ causes an increase in K

A

Temperature

91
Q

Exothermic reaction:

A fall in temperature causes an _______ in K

A

Increase

92
Q

Units for K

A

No units

93
Q

Equilibrium of water and aqueous solutions

A

There is an equilibrium between the water molecules and hydronium (hydrogen) and hydroxide ions

94
Q

Equilibrium of water and aqueous solutions

A

There is an equilibrium between the water molecules and hydronium (hydrogen) and hydroxide ions

95
Q

Ionisation of water equation

A

H20 (l) + H2O (l) → H3O+ (aq) + OH- (aq)

96
Q

H20 (l) + H2O (l) → H3O+ (aq) + OH- (aq)

A

Ionisation of water equation

97
Q

H3O+

A

Hydronium ion, a hydrated proton, H+

98
Q

Hydronium ion, a hydrated proton, H+

A

H3O+

AH Chemistry (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions