C5.3 Flashcards

1
Q

What is a reversible reaction

A

When the products can react together to form the original reactants.

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2
Q

What is the forward reaction in terms of the backward reaction

A

The forward reaction is the opposite energy change of the backward reaction for example the forward reaction is (endothermic) the backward reaction is (exothermic)

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3
Q

What is a closed system

A

A closed system means that no substances can enter or leave. The rate of the forward reaction and backward reaction become equal the situation is called dynamic equilibrium.

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4
Q

What is at equilibrium

A

The rate of the forward and backward reactions happens
The concentrations of all reacting substances remains constant

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5
Q

What is the equilibrium position

A

Gives you an idea of the ratio of equilibrium concentrations of products to reactants.

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6
Q

What happens if the pressure increases

A

The equilibrium position moves in the direction of the fewest moles of gas

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7
Q

What happens if the concentration increases

A

If the concentration of a substance is increased, the equilibrium position moves in the direction away from the substance.

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8
Q

What happens if the temperature increases

A

If the temperature increases, the equilibrium position moves in the direction of the endothermic changes.

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9
Q

What does the equilibrium yield depend on

A

It depends on pressure, temperature and concentration

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10
Q

What are the costs of high pressures

A

Need lots of money to be held constant.

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11
Q

Why are temperatures needing to be high

A

Temperature can’t be low enough as the rate of reaction is too low.

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