DAT Chemistry 6 - Chemcal equilibrium

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Last updated 12:42 AM on 5/30/26
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34 Terms

1
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Dyanmic equilibrium

When the rate at which products are being connverted into reactants and the rate that reactants are being converted into reactants are the same

<p>When the rate at which products are being connverted into reactants and the rate that reactants are being converted into reactants are the same </p>
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equilibrium constant

Kc = Kforward / Kreverse

Kc = rate

Kc = [B]^m/[A]^n

<p>Kc = Kforward / Kreverse</p><p></p><p>Kc = rate </p><p></p><p>Kc = [B]^m/[A]^n</p>
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Do solids and liquids apear in Kc

no

<p>no</p>
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What can change the equilibrium constant

temperature

<p>temperature </p>
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Kp

equilibrium constant in terms of pressure

ONLY GASSES

<p>equilibrium constant in terms of <strong>pressure </strong></p><p></p><p><strong>ONLY GASSES</strong></p>
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what relationship do opposite and forward reactions have to each other

they are reciprocals

<p>they are reciprocals </p>
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what does k >1 mean

the products are favored at equilibrium

<p>the products are favored at equilibrium </p>
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what does k < 1 mean

reactants are favored at equilibrium

<p>reactants are favored at equilibrium</p>
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What is the “Kc” of a system not equilibrium

Qc

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Qc

concentration values in the Kc equation not yet in equilibrium

<p>concentration values in the Kc equation not yet in equilibrium </p>
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Qp

pressure values in the Kc equation not yet in equilibrium

<p>pressure values in the Kc equation not yet in equilibrium </p>
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What if Q > K

it needs to favor the reactants side

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What if Q < K

it needs to favor the products side

<p>it needs to favor the products side </p>
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What if Q = K

the system has reached equilibrium

<p>the system has reached equilibrium </p>
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how does a system react to adding heat

If its endothermic, it shifts towards the product

If its exothermic, it shifts towards the reactant

<p>If its endothermic, it shifts towards the product</p><p>If its exothermic, it shifts towards the reactant</p>
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how does a system react to taking away heat

If its endothermic, it shifts towards the reactant

If its exothermic, it shifts towards the product

<p>If its endothermic, it shifts towards the reactant</p><p>If its exothermic, it shifts towards the product </p>
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how does a system react to adding substances

it shifts toward the oppisite side

<p>it shifts toward the oppisite side </p>
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how does a system react to adding inert gasses

no change

<p>no change </p>
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how does a system react to adding pressure

shifting to the side with the least molecules

<p>shifting to the side with the least molecules</p>
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how does a system react to decreasing pressure

shifting to the side with the most molecules

<p>shifting to the side with the most molecules</p>
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how does a system react to increasing volume

shifting to the side with the most molecules

<p>shifting to the side with the most molecules</p>
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how does a system react to decreasing volume

shifting to the side with the leasr molecules

<p>shifting to the side with the leasr molecules</p>
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Do catalysts shift equilibrium

no

<p>no</p>
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Strong electrolytes

Strong acids, bases, or ionic compounds that readily dissolve in water

<p>Strong acids, bases, or ionic compounds that readily dissolve in water </p>
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weak electrolytes

weak acids, bases, or ionic compounds that do not readily dissolve in water

Product heavily favored

<p>weak acids, bases, or ionic compounds that do not readily dissolve in water</p><p></p><p>Product heavily favored </p>
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K value for weak bases

Kb

<p>Kb</p>
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k value for weak acids

ka

<p>ka</p>
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k values for insoluble solids

Ksp

<p>Ksp</p>
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k value for water

kw

<p>kw</p>
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What does ICE stand for

Initial, change, equilibrium

<p>Initial, change, equilibrium</p>
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when do you remove x

when kc < 10^-3

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How to find molar solubility

Do Ice table and find X

remember, molar solubility is mols of dissolved solute/1L of saturated solution

<p>Do Ice table and find X</p><p></p><p>remember, molar solubility is mols of dissolved solute/1L of saturated solution</p>
33
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Common ion effect

If you have an equilinrium reaction and add a strong electrolyte that produces one of the ions on the right side of the reaction,

<p>If you have an equilinrium reaction and add a strong electrolyte that produces one of the ions on the right side of the reaction, </p>
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How to determine if there is precipitation

if Q>Ksp, precipitiation

if Q<Ksp, no precipitiation

IE, if more products, preciptation

<p>if Q&gt;Ksp, precipitiation</p><p>if Q&lt;Ksp, no precipitiation</p><p></p><p>IE, if more products, preciptation </p>