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What do you ignore in the rection when writing equilibrium expressions?
Solids & Liquids
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How will the solutions be written? (in what form of concentration i.e. moles, molality, etc..)
Molarity
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What do these brackets [] stand for in equilibrium expressions?
The concentration of the ion in Molarity
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K= What over What?
Products/Reactants
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Rewrite this using the equilibrium expression: aA+bB=cC+dD
[C]^c[D]^d/[A]^a[B]^b
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If Q < K, then _________
Reactants -> Products.. Shifts to the right
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If Q = K, then ______.
Equilibrium is reached
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If Q > K, then _______.
Products -> Reactants.. Shift to the left
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If K < 1, then _______.
Reactants are favored
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If K > 1, then ________.
Products are favored
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If we multiply a reaction by N, then what is the new formula for K?
Knew=(kold)n N=the # that changed the reaction
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If the reaction is reversed, then what is the formula for the new K?
Knew = 1/kold
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How many different types of stress have an impact on K?
Three
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What are the different types of stresses & impacts on K?
- 1) Adding/Removing reactants or products
- 2)Change in Pressure/Volume (only gases)
- 3)Change in Temperature (adding/subtracting temp)
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When adding Pressure, what happens to the volume?
It decreases
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When adding volume, what happens to the pressure?
It decreases
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When volume is added, which direction does the reaction point to?
In direction of most moles
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When pressure is added, which direction does the reaction point to?
In direction of less moles
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When adding temperature to an endothermic reaction, which way does the reaction shift?
Endothermic: acts as reactant (+ value) Shifts to the right
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When adding temperature to an exothermic reaction, which way does the reaction shift?
Exothermic: acts as products (- value) Shifts to the left
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How can you tell if a reaction is exothermic?
It has a negative value, or acts as the products
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How can you tell if a reaction is endothermic?
It has a positive value, or acts as the reactants
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