What Is Chemical Equilibrium? (Grade 12 NSC Matric Physical Sciences): Flashcards
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What is chemical equilibrium?
What is chemical equilibrium?
When forwards & reverse reaction rates are equal
Define open system
Define open system
System allowing energy & matter to move in/out
Define closed system
Define closed system
System where only energy moves in/out, not matter
What is a reversible reaction?
What is a reversible reaction?
Reaction that can proceed in both directions
Symbol for reversible reactions
Symbol for reversible reactions
⇌ (double-headed arrow)
Direction of forwards reaction
Direction of forwards reaction
Left to right
Direction of reverse reaction
Direction of reverse reaction
Right to left
Why closed system needed for equilibrium?
Why closed system needed for equilibrium?
Prevents reactants/products escaping; allows equilibrium
At equilibrium, what happens to concentrations?
At equilibrium, what happens to concentrations?
Remain constant
Define dynamic equilibrium
Define dynamic equilibrium
Forwards & reverse rates equal; amounts constant