C6: REVERSIBLE REACTIONS Flashcards

1
Q

What is the symbol for a reversible reaction?

A

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2
Q

If a reaction is exothermic in the forwards direction, what would it be in the backwards direction?

A

endothermic

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3
Q

hydrated copper sulfate ⇌ ________ + _________

A

hydrated copper sulfate ⇌ anhydrous copper sulfate + water

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4
Q

In the forwards direction, is the reaction hydrated copper sulfate ⇌ anhydrous copper sulfate + water endothermic or exothermic?

A

endothermic

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5
Q

In the backwards direction, is the reaction hydrated copper sulfate ⇌ anhydrous copper sulfate + water endothermic or exothermic?

A

exothermic

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6
Q

What colour is hydrated copper sulfate?

A

blue

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7
Q

What colour is anhydrous copper sulfate?

A

white

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8
Q

ammonium chloride ⇌ ________ + _________

A

ammonium chloride ⇌ ammonia + hydrogen chloride

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9
Q

What is equilibrium?

A

-when rate of forward and backward reactions are equal
-concs of reactants and products are constant (but not necessarily equal)

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10
Q

What is required for a reaction to reach equilibrium?

A

reaction has to happen in a closed system

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11
Q

What is Le Chatelier’s principle?

A

when you make a change, equilibrium shifts to oppose the change

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12
Q

If temp is increased, how would equilibrium shift to decrease temp?

A

the equilibrium will shift towards the endothermic direction

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13
Q

If temp is decreased, how would equilibrium shift to increase temp?

A

the equilibrium will shift towards the exothermic direction

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14
Q

If pressure is increased, how would equilibrium shift to decrease pressure?

A

the equilibrium will shift to the side with the least moles

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15
Q

If pressure is decreased, how would equilibrium shift to increase pressure?

A

the equilibrium will shift to the side with the most moles

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16
Q

If conc of reactants is increased, how would the system decrease conc of reactants?

A

the system tries to decrease conc of reactants by making more products

17
Q

If conc of products is increased, how would the system decrease conc of products?

A

the system tries to decrease conc of products by reducing amount of reactants

18
Q
A