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CHEM 30 > Equillibrium ( DEFINITIONS ) > Flashcards

Equillibrium ( DEFINITIONS ) Flashcards

1
Q

Endothermic Reaction

A
  • Energy enters reaction
  • Energy considered part of reactants
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2
Q

Exothermic

A
  • Energy exists in the reaction
  • Energy is considered part of the products
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3
Q

Closed System

A

No substance can enter or leave reaction

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4
Q

Open System

A

Matter can enter or leave reaction

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5
Q

Dynamic Equilibrium

A

Forward and Reverse reactions are occurring at the same time and rate

  • Represented with double arrow
  • Occurs in closed system
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6
Q

Steady State

A

A system that is unchanging at the visible and molecular level

  • Occurs in Open Systems
  • NOT equilibrium
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7
Q

Forward Reaction

A
  • Left to Right
  • Reactants to Products
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8
Q

Reverse Reaction

A
  • Right to Left
  • Products to Reactants
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9
Q

Le Chatelier’s Principle

A

When stress is applied to a system in dynamic equilibrium, it will shift to relieve that stress.

3 stresses:

  • Concentration
  • Temperature
  • Pressure + Value
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10
Q

Spontaneity

A
  • Reaction happens easily on its own
  • Products favoured
  • Large equilibrium constant (>1)
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11
Q

Non-Spontaneous Reactions

A
  • Does NOT happen easily, if not at all
  • Reactants favoured
  • Small equilibrium constant (<1)
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12
Q

Solubility

A

Maximum amount of solute that dissolves in a quantity of solvent at a specific temperature

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13
Q

Solute

A

Substance that dissolves

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14
Q

Solvent

A

Substance that does dissolving

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15
Q

Soluble

A

Can dissolve

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16
Q

Insoluble

A

Can’t dissolve

17
Q

Miscible

A

Liquid dissolve in Liquid

18
Q

Dissociation

A

Separation of ions in an ionic compound

19
Q

Aqueous

A

Water containing dissolves substances

20
Q

Precipitate

A

Solid formed after dissolving a substance in liquid

21
Q

Net Ionic Equation

A

Chemical equation that shows only those ions directly involved in the chemical reaction

22
Q

Spectator Ion

A

Does not precipitate in the reaction

23
Q

Saturated Solution

A

When as much solute as possible has been dissolved in the solvent at that temperature

24
Q

Unsaturated Solution

A

Solvent can still dissolve more solute

25
Q

Supersaturated Solution

A

Contains more than the maximum amount of dissolved solute at a given temperature

26
Q

Solubility Product Constant (Ksp)

A

Equilibrium constant for a solid substance dissolving in an aqueous solution

  • Represents level at which a solute dissolves in a solution
  • More soluble substance = Higher Ksp value

CHEM 30 (7 decks)

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