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GCSE Chemistry > C13 - Equilibrium (PAPER 2) > Flashcards

C13 - Equilibrium (PAPER 2) Flashcards

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1
Q

What is a reversible reaction

A

one where the reactants turn into products and the products turn into reactants

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2
Q

What symbol is used to show a reversible reaction

A

⇌

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3
Q

What is dynamic equilibrium

A

the point in a reversible reaction where the rate of the forward and reverse reactions are the same, the amount of reactants and products are equal

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4
Q

What are the three conditions that can affect dynamic equilibrium

A

temperature, pressure, concentration

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5
Q

What changes the ratio of reactants : products in dynamic equilibrium

A

external conditions

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6
Q

What is Le Châtelier’s principle

A

the position of equilibrium will shift to oppose external changes

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7
Q

What is the effect of increasing the concentration of the product (Equilibrium)

A

favours the reverse reaction - more reactant and less product

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8
Q

What is the effect of decreasing the concentration of the product (Equilibrium)

A

favours the reverse reaction - more reactant and less product

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9
Q

What is the effect of decreasing the concentration of the reactant (Equilibrium)

A

favours the reverse reaction - more reactant and less product

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10
Q

What is the effect of increasing the concentration of the reactant (Equilibrium)

A

favours the forward reaction - less reactant and more product

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11
Q

What is the effect of increasing the temperature of the surroundings (Equilibrium)

A

favours the endothermic reaction - reaction decreases temperature of the surroundings

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12
Q

What is the effect of decrease the temperature of the surroundings (Equilibrium)

A

favours the exothermic reaction - reaction increases temperature of the surroundings

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13
Q

What does the effect of changing the temperature in the surroundings depend on (Equilibrium)

A

which reaction is endothermic and exothermic

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14
Q

What does the effect of changing the pressure depend on (Equilibrium)

A

which side of the reaction has more molecules of gas

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15
Q

What is the effect of increasing the pressure (Equilibrium)

A

favours the reaction that results in fewer molecules - decreasing the number of molecules in the vessel opposes the change

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16
Q

What is the effect of decreasing the pressure (Equilibrium)

A

favours the reaction that results in more molecules - increasing the number of molecules in the vessel opposes the change

17
Q
A

GCSE Chemistry (20 decks)

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