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Post Laboratory Discussion Flashcards

1
Q

Describes how fast reactants are used up and products are formed

A

Rate of reaction

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2
Q

What will happen if is collisions among atoms, ions, molecules with sufficient energy and proper orientation

A

Chemical Reaction

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3
Q

What is the symbol for Activation Energy

A

Ea

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4
Q

Minimum amount of energy required to initiate a chemical reaction

A

Activation

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5
Q

Formula for activation energy

A

Ea = rate of rxn = t

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6
Q

Study of rates of chemical reactions, factors that affect reaction rates, and mechanisms by which reactions occure

A

Chemical kinetics

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7
Q

What are the factors that affect reaction rate?

A

Nature of reactants
Concentration
Temperature
Catalyst

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8
Q

Rate of rxns depends on the surface areas or degree of subdivision

A

Nature of reactants

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9
Q

Formula for nature of reactants

A

Smaller particles = rate

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10
Q

Rate of collisions = # number of collisions / s

A

Concentration

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11
Q

Average kinetic energy of molecules is proportional to the ____________

A

Temperature

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12
Q

Formula for temperature

A

T = KE = Collision of molecules

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13
Q

Are substances that can be added to reaction mixtures to increase the rate of reaction

A

Catalyst

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14
Q

The rate of a chemical reaction increases as the concentration ___________

A

Increases (DIRECTLY PROPORTIONAL)

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15
Q

Chemical rxns that occur in either direction

A

Reversible rxns

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16
Q

Exists when 2 opposing rxns occur simultaneously at the same rate

A

Chemical equilibrium

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17
Q

The system shifts in the direction that reduces the stress

A

Le Chatelier’s

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18
Q

3 types if changes that can disturb the equilibrium of a rxn

A

Changes in concentration
Changes in temperature
Changes in pressure or volume

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19
Q

What are directions where equilibrium shifts?

A

Left and Right

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20
Q

equation that includes the amount of heat in the chemical reaction either released (exothermic) or absorbed (endothermic)

A

Thermochemical Equation

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21
Q

Exothermic

A

Released

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22
Q

Endothermic

A

Absorbed

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23
Q

What is the Theory where it has the formula of PV = nRT

A

Ideal Gas Law

24
Q

What is value of gas constant?

25
Q

__P = __V less # gas molecule =?

26
Q

__P = __V greater # gas molecule =?

27
Q

Hasten

A

Accelerator

28
Q

Retard

29
Q

What does
- same moles
- inert gas
- (+) catalyst
have in common?

A

No effect in equilibrium

30
Q

What is the color and conclusion of CH3COOH + Methyl Red?

A

Red and Acidic

31
Q

What is the color and conclusion
CH3COOH + Methyl Red + NaCH3COO

A

Yellow and Basic

32
Q

Chemical name of NaCH3COO

A

Sodium Acetate

33
Q

What is conclusion of Reagents with Ion present is Co(H2O)6^+2 (hexaaquacobalt(2) complex ion)

34
Q

What is conclusion of Reagents with Ion present is Co(H2O)6^+2 + HCl

A

Blue (CoCl4^-2) (tetrachlorocobaltate ion)

35
Q

What is conclusion of Reagents with Ion present is Co(H2O)6^+2 + H20

A

Pink (Co(H2O)6^2)

36
Q

What is conclusion of Reagents with Ion present is Co(H2O)6^+2 + AgNO3

A

Pink Soln + AgCl white precipitate

37
Q

What is the Color and Nature of product of AgNO3 + HCl

A

AgCl + White precipitate

38
Q

What is the Color and Nature of product of AgNO3 + HCl + HCl

A

More AgCl (increase Cl^-)

39
Q

What is the Color and Nature of product of AgNO3 + HCl + NH4OH

A

Colorless solution Ag(NH3)2^+

40
Q

What is the Color and Nature of product of AgNO3 + HCl + HCl

A

AgCl white precipitate (decrease Ag(NH3)2+)

41
Q

What is the color of the reagents FeCl3 + KSCN

A

Old red soln

42
Q

What is the color of the reagents FeCl3 + KSCN + Fe(NO3)3

A

Intensified red solution (inc Fe+3)

43
Q

What is the color of the reagents FeCl3 + KSCN + KCl

A

Lightly red soln (inc KCl)

44
Q

What is the color of the reagents FeCl3 + KSCN + Na2HPO4

A

Dissapearance of color (dec FeCl3) FePO4 white precipitate

45
Q

What is the ionization of acetic acid?

A

Partially ionized

46
Q

Why is acetic acid partially ionized?

A

because it is a weak acid

47
Q

When NaCH3COO is added to CH3COO-, what happens to the ions?

A

It increases the CH3COO- ions in solution

48
Q

When NaCH3COO is added to CH3COO-, what happens to the reaction?

A

backward rxn, decreasing the H+
hence becoming basic

49
Q

AgCl (white) <–> Ag+ + Cl-, what happens if you add more HCl

A

It completes the reaction of AgCl thus it has a backward reaction

50
Q

AgCl (white) <–> Ag+ + Cl-, What happens if NH4OH is added?

A

Decreases the Ag ions, thus it has a forward reactgion

51
Q

AgCl (white) <–> Ag+ + Cl-, what happen if you added HCl with the Nh4OH,

A

Neutralizes the ammonia and increases Ag to precipitate again to AgCl

52
Q

Fe+3 + SCN- <—-> Fe(SCN) +2, what happens if you added Fe(NO3)3

A

Increases the Fe+3 ions, thus it has a forward reaction

53
Q

Fe+3 + SCN- → Fe(SCN) +2, what happens if you added KCl,

A

Decreases the Fe+3 ions forming FeCl3, Backward Reaction

54
Q

Fe+3 + SCN- → Fe(SCN) +2, what happens if you added Na2HPO4

A

Decreases the Fe+3 ions forming FePO4, Backward Reaction

Inorg Lab (11 decks)

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