Equillibrium ( DEFINITIONS ) Flashcards
1
Q
Endothermic Reaction
A
- Energy enters reaction
- Energy considered part of reactants
2
Q
Exothermic
A
- Energy exists in the reaction
- Energy is considered part of the products
3
Q
Closed System
A
No substance can enter or leave reaction
4
Q
Open System
A
Matter can enter or leave reaction
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
6
Q
Steady State
A
A system that is unchanging at the visible and molecular level
- Occurs in Open Systems
- NOT equilibrium
7
Q
Forward Reaction
A
- Left to Right
- Reactants to Products
8
Q
Reverse Reaction
A
- Right to Left
- Products to Reactants
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
10
Q
Spontaneity
A
- Reaction happens easily on its own
- Products favoured
- Large equilibrium constant (>1)
11
Q
Non-Spontaneous Reactions
A
- Does NOT happen easily, if not at all
- Reactants favoured
- Small equilibrium constant (<1)
12
Q
Solubility
A
Maximum amount of solute that dissolves in a quantity of solvent at a specific temperature
13
Q
Solute
A
Substance that dissolves
14
Q
Solvent
A
Substance that does dissolving
15
Q
Soluble
A
Can dissolve
