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Spontaneous Reaction quiz

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Terms in this set (18)

  • What is true for all exergonic reactions?
    They release energy.
  • What must be true of a spontaneous process?
    A spontaneous process occurs without the need for an external energy source.
  • What best describes an exergonic reaction?
    It releases energy.
  • What is true for all exergonic reactions?
    They release energy.
  • When will an endergonic and exergonic reaction that are coupled proceed spontaneously?
    The coupled reactions will proceed spontaneously if the overall process results in a net release of energy.
  • What is true about all spontaneous processes regarding energy input?
    They occur without external energy.
  • What is true about exergonic reactions in terms of energy change?
    They release energy.
  • Which statement best describes an exergonic reaction? A) It absorbs energy. B) It releases energy. C) It requires continuous energy input. D) It is always non-spontaneous.
    B) It releases energy.
  • Which two of the following apply to the products of an exergonic reaction? A) They have more energy than the reactants. B) They have less energy than the reactants. C) They are more stable. D) They are less stable.
    B) They have less energy than the reactants. C) They are more stable.
  • Which type of reaction is always exergonic? A) Combustion reactions. B) Photosynthesis. C) Endothermic reactions. D) Electrolysis.
    A) Combustion reactions.
  • Which reaction is an example of an exergonic reaction?
    Cellular respiration.
  • What is true about exergonic reactions in terms of energy?
    They release energy.
  • Which reactions are spontaneous at high temperatures? A) Endothermic reactions with positive entropy change. B) Exothermic reactions with negative entropy change. C) Endothermic reactions with negative entropy change. D) Exothermic reactions with positive entropy change.
    A) Endothermic reactions with positive entropy change.
  • If a reaction is exergonic, what can be said about its energy change?
    If a reaction is exergonic, it releases energy, resulting in a negative change in free energy (ΔG < 0).
  • What correctly describes an exergonic reaction?
    It releases energy.
  • Which type of chemical reaction tends to occur on its own? A) Endergonic reactions. B) Exergonic reactions. C) Non-spontaneous reactions. D) Reactions requiring continuous energy input.
    B) Exergonic reactions.
  • What is true about a spontaneous process regarding external energy?
    It occurs without external energy.
  • What can be said about the spontaneity of this reaction if it is exergonic?
    If the reaction is exergonic, it is spontaneous, meaning it can occur without the need for external energy.