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Chem > ACS Final 2015 > Flashcards

ACS Final 2015 Flashcards

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1
Q

How to find Kw

A

[H30+][OH-]=1.0*x10^14

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2
Q

How to find Kw

A

[H30+][OH-]=1.0*x10^14

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3
Q

How to find pKa

A

-log(Ka)

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4
Q

[H3O+]

A

Square root of (Ka)(initial concentration)

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5
Q

STRONG ACIDS

A

HCl, HBr, HI, HClO4, H2SO4, HNO3

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6
Q

Weak acids Ka…

A
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7
Q

Weak acid + strong base pH …

A

> 7

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8
Q

Strong acid + weak base titration pH…

A
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9
Q

Buffer equation

A

pH=pKa + log([salt]/[acid])

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10
Q

Ka =

A

Concentration of products divided by concentration of reactants

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11
Q

1st Law of Thermodynamics

A

mass is neither created nor destroyed

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12
Q

2nd Law of thermodynamics

A

entropy will always increase in the natural world

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13
Q

3rd Law of thermodynamics

A

A perfect crystalline solid is 0 K

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14
Q

Enthalpy

A

heat is absorbed

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15
Q

Delta H

A

Exothermic

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16
Q

Delta H > 0

A

Endothermic

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17
Q

Entropy

A

disorder of a substance

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18
Q

+delta S

A

More randomness

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19
Q

Gibbs Free Energy

A

⋀G=⋀H-T⋀S

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20
Q

⋀G +

A

SPONTANEOUS

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21
Q

⋀G -

A

Non-spontaneous

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22
Q

Gas equilibrium constant

A

⋀G = -RTln(K)

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23
Q

Low Ksp

A

Low solubility

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24
Q

Le Chât’s Principle

A

Equilibrium will shift in response stop temperature, pressure or concentration

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25
Q

[H3O+]

A

Square root of (Ka)(initial concentration)

26
Q

STRONG ACIDS

A

HCl, HBr, HI, HClO4, H2SO4, HNO3

27
Q

Weak acids Ka…

A
28
Q

Weak acid + strong base pH …

A

> 7

29
Q

Strong acid + weak base titration pH…

A
30
Q

Buffer equation

A

pH=pKa + log([salt]/[acid])

31
Q

Ka =

A

Concentration of products divided by concentration of reactants

32
Q

1st Law of Thermodynamics

A

mass is neither created nor destroyed

33
Q

2nd Law of thermodynamics

A

entropy will always increase in the natural world

34
Q

3rd Law of thermodynamics

A

A perfect crystalline solid is 0 K

35
Q

Enthalpy

A

heat is absorbed

36
Q

Delta H

A

Exothermic

37
Q

Delta H > 0

A

Endothermic

38
Q

Entropy

A

disorder of a substance

39
Q

+delta S

A

More randomness

40
Q

Gibbs Free Energy

A

⋀G=⋀H-T⋀S

41
Q

⋀G +

A

SPONTANEOUS

42
Q

⋀G -

A

Non-spontaneous

43
Q

Gas equilibrium constant

A

⋀G = -RTln(K)

44
Q

Low Ksp

A

Low solubility

45
Q

How to find K

A

[B]^b/[A]^a

46
Q

Le Chât’s Principle

A

Equilibrium will shift in response stop temperature, pressure or concentration

47
Q

When AB adding A will…

A

Cause it to shift to B

48
Q

Lowering temp (exothermic)

A

Shift toward product

49
Q

Lowering temp (endothermic)

A

Shift toward reactant

50
Q

First order-

A

ln[A] vs. time

51
Q

Second order-

A

1/[A] + kt

52
Q

Zero order-

A

-kt + [A]

53
Q

Arrhenius equation-

A

l=Ae^(-Ea/RT)

54
Q

Boyle’s law

A

PxV

55
Q

Charles’s Law

A

V/T

56
Q

Volume/temp proportion

A

v1t2=v2t1

57
Q

Avagadro’s Law

A

V/n

58
Q

IDEAL GAS LAW

A

pV=nRT

59
Q

Partial Pressures

A

P(total)= p1+p2+p3….

60
Q

Mole fraction=

A

x/x+y+z

Chem (5 decks)

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