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Equilibrium 1

Quiz by Eric Williams

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10 questions
Show answers
  • Q1
    What is chemical equilibrium?
    The point at which the concentration of reactants does not change with time
    Magic
    The point at which the concentrations of both products and reactants do not change with time
    The point at which the concentration of products does not change with time
    20s
  • Q2
    The percent reaction of a given chemical reaction is calculated to be ~78%. This reaction would be classified as:
    Reactant Favouring
    Quantitative
    Product Favouring
    No reaction
    20s
  • Q3
    In an open system, we have the breakdown of CaCO3 into CaO and CO2 via heat. This reaction is quantitative.
    False
    True
    120s
  • Q4
    The percent reaction of a given chemical reaction is calculated to be 0.1%. This reaction would be classified as:
    Quantitative
    Product Favouring
    Reactant Favouring
    No Reaction
    20s
  • Q5
    The theoretical concentration of product of a reaction going to completion is 3.0 mol/L, but we only receive 2.3 mol/L. What is the percent reaction?
    50%
    76%
    77%
    82%
    45s
  • Q6
    The equilibrium constant "K" is related to what ratio?
    Products to reactants
    Products to volume
    Pressure to reactants
    30s
  • Q7
    In the above reaction at equilibrium, we have the following concentrations: [A]=4.0 mol/L, [B]=1.5 mol/L, [C]=2.5 mol/L, [D]=3.5 mol/L. What is the equilibrium constant?
    Question Image
    3.3 x 10^-2
    29.8
    3.0x10
    30
    120s
  • Q8
    We have a reaction that has reached equilibrium, and the concentration of the reactants and products are 2.6 mol/L and 0.4 mol/L respectively. What is the equilibrium constant of the reaction?
    7.0
    0.2
    0.15
    6.5
    45s
  • Q9
    We have calculated the equilibrium constant of a reaction to be 2.6x10^4. We can say that this reaction is:
    Quantitative
    Slow
    Reactant favouring
    Fast
    45s
  • Q10
    The equilibrium law is expressed in what formula?
    K=[Products]/[Reactants]
    K=Temperature/Volume
    q=mc(dT)
    K=PV
    45s

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