Chemical Equilibrium Flashcards

1
Q

What is the formula for the reaction Quotient?

A
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2
Q

What is the formula for the reaction Equilibrium constant?

A
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3
Q

What is the difference between a reaction quotient and an equibrium constant?

A

Equilibrium constant is the reaction quotient at equibrium

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4
Q

what is chemical equilibrium?

A

when the concentrations of the products and reactants are unchanged over time

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5
Q

How do you calculate the gas phase equilibria constant?

A

using partial pressures of gasses

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6
Q

How do you calculate Kp from Kc?

A
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7
Q

What is the Equilibrium constant of the following reaction?

A

Solids have an Activity of 1
non-homogenous equilibrium

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8
Q

What is an activity?

A

Concentration or Partial Pressure to the power of the stochiometric coefficient

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9
Q

How can liquids have an Activity of 1

A

If the reaction occurs in a liquid that isnt mixed with anything else

eg. reaction occurs in a vessel of pure ethanol.

or 2 immiscible liquids

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10
Q

If the equilibrium constant is Below 1 is the forward reaction or backward reaction favored

A

Backwards - reactants are favoured

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11
Q

If the equilibrium constant is Larger then 1 is the forward reaction or backward reaction favored

A

Forwards- products are favoured

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12
Q

What is the Equilibrium constant for the following set of reactions

A

parallel equilibria

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13
Q

what is the acid dissociation constant of the following reaction

A

H20 has an activity of 1

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14
Q

Explain LeChatelier’s Principle

A

If a system at equilibrium is stressed, the system will re-establish the equilibrium to reduce the applied stress

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15
Q

What is Solubility Equilibrium

Whats the Solublilty Equilibria of the following Equation

A

Equilibria Constant that involves an ionic solid that doesn’t fully dissociate and its consituent ions.

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16
Q

What is a strong acid

A

An acid that fully dissociates into its constituent ions.

Very Favoured Foward Reaction in reality

17
Q

what is the formula of pH?

A
18
Q

what is the formula of pKa?

A
19
Q

What is equilibrium in terms of free gibbs

What is the Equation for free gibbs at equilibrium

A

Equilibrium is the state of minimum Free Gibbs Energy

20
Q

What is free gibbs?

A

quantity used to measure the maximum amount of work done in a thermodynamic system when the temperature and pressure are kept constant

21
Q
A