Part 17 - Le Chatelier's Principle

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Last updated 3:35 PM on 9/21/26
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13 Terms

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Le Chatelier’s Principle (Equilibrium Law)

principle stating that if a stress is applied to a system in equilibrium, the equilibrium shifts to relieve the stress

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  • conc. of reactants / products

  • pressure / volume of system

  • temperature of reaction


3 ways that changes the shift of equilibrium

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catalyst

  • its presence does not alter the equilibrium constant

  • its effect is to decrease the time needed for the system to reach a state of equilibrium


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right (forward direction)

increase of conc. of reactants / decrease conc. of products = shift to ___

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left (backward direction)

increase conc. of products / decrease conc. of reactants = shift to the ____

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lesser

increase pressure / decrease vol. = shift to ___ moles of gas

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greater

decrease in pressure / increase in volume = shifts to the ___ moles of gas

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exothermic

temp. increase = shift to left

temp. decrease = shift to right


this reaction is?

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endothermic

temp. increase = shift to right

temp. decrease = shift to left

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b) first statement is incorrect, second statement is correct

increase in volume results to increase in pressure
increase in pressure results to a shift to the lesser moles of gas

a) first statement is correct, second statement is incorrect

b) first statement is incorrect, second statement is correct
c) all statement are correct
d) all statement are correct

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a) first statement is correct, second statement is incorrect

increase conc. of reactants shift to the right

shift to the right is also known as backward direction

a) first statement is correct, second statement is incorrect

b) first statement is incorrect, second statement is correct
c) all statement are correct
d) all statement are correct

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c) all statement are correct

increase in conc. of products shift to the left
decrease conc. of reactants shift to the left

a) first statement is correct, second statement is incorrect

b) first statement is incorrect, second statement is correct
c) all statement are correct
d) all statement are correct

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b) catalyst

The following are factors that affect the shift equilibrium except:

a) volume

b) catalyst
c) temperature
d) concentration