Equilibrium and LeChatelier's Princple Review for Quiz on Friday June 17

Quiz by Trina Boyle

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20 questions
• Q1
is a state in which there are no observable changes as time goes by
Rates
Equalziation
Equilibrium
LeChatelier's Principle
30s
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• Q2
the changes that occur are physical processes.
physical equilibrium
chemical equilibrium
30s
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• Q3
Chemical equilibrium is achieved when:
the rates of the forward and reverse reactions are constant
the rates of the forward and reverse reactions are equal
the rates of the forward and reverse reactions are not equal
30s
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• Q4
the ratio of product concentrations to reactant concentrations at equilibrium, with each concentration raised to a power equal to the number of moles of that substance in the balanced chemical equation
Equilibrium Factor
Equilibrium Number
equilibrium constant
30s
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• Q5
If Keq is less than 1 equilibrium will favor
Product
Equal Reactants and Products
reactants
30s
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• Q6
applies to reactions in which all reacting species are in the same phase
Homogeneous equilibrium
Heterogeneous Equilibrium
30s
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• Q7
If an external stress is applied to a system at equilibrium, the system adjusts in such a way that the stress is partially offset as the system reaches a new equilibrium position.
Le Champion Principle
Le Châtelier's Principle
Le Champagne Principle
30s
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• Q8
the left toward reactants
Increase concentration of product(s) the reaction will shift reaction to
30s
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• Q9
If Keq is more than 1 equilibrium will favor
products
Products and Reactants
reactants
30s
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• Q10
Decrease concentration of product(s) the reaction will shift reaction to
left;towards the products
left; towards the reactants
right; towards the reactants
right; towards the products
30s
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• Q11
Increase concentration of reactant(s) the reaction will shift reaction to
left; towards the products
right; towards the reactants
left; towards the reactants
right towards the products
30s
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• Q12
the left toward reactants
Decrease concentration of reactant(s) the reaction will shift reaction to
30s
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• Q13
Increase pressure the reaction will shift reaction to
Side with most moles of gas
Side with fewest moles of gas
30s
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• Q14
Decrease pressure the reaction will shift reaction to
Side with least moles of solid
Side with least moles of gas
Side with most moles of solid
Side with most moles of gas
30s
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• Q15
Side with most moles of gas
Increasing volume the reaction will shift reaction to
30s
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• Q16
Side with fewest moles of gas
Decreasing volume the reaction will shift reaction to
30s
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• Q17
does not change Keq
Cooling
Heating
30s
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• Q18
system will take a longer time to reach equilibrium
system will reach equilibrium sooner
30s
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• Q19
Decreasing Temperature of Exothermic reaction (Energy on the Product side)
Shifts to the Right
Shifts to the Left
30s
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• Q20
Exothermic Reaction
H2 (g) + Cl2 (g) + energy ↔ 2HCl (g)
H2 (g) + Cl2 (g) ↔ 2HCl (g) + energy
30s
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