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WorksheetsThermodynamics and Chemical Equilibrium Quiz
Total questions: 10
Worksheet time: 5mins
The significance of the second law of thermodynamics is that it:
Establishes the direction of spontaneous processes and the concept of entropy.
None of the above
Both A and B
Establishes the direction of non-spontaneous processes.
A catalyst affects the reaction rate by:
Lowering the activation energy of the reaction.
Increasing the temperature of the reaction.
Increasing the pressure of the reaction.
None of the above.
If a gaseous equilibrium system is subjected to an increase in temperature, the system will shift in the direction that:
Absorbs more heat.
Releases heat.
Remains unchanged.
None of the above.
According to the Bronsted- Lowry theory, an acid is defined as a substance that:
Donates a proton (H+).
Accepts a proton (H+).
Releases hydroxide ions.
None of the above.
The second law of thermodynamics highlights:
The natural tendency of systems to evolve towards greater disorder.
The conservation of energy.
The stability of systems.
None of the above.
In a dynamic equilibrium, which statement is true?
The reaction rates of the forward and reverse reactions are equal, but the concentrations of reactants and products remain constant.
The forward reaction stops.
The reverse reaction stops.
None of the above.
Activation energy is the energy required for:
The reaction to begin.
The reaction to end.
The reaction to reach equilibrium.
None of the above.
According to the second law of thermodynamics, a spontaneous process is one that:
Increases the entropy of the universe.
Decreases the entropy of the universe.
Has no effect on the entropy.
None of the above.
The second law of thermodynamics predicts that:
Heat flows spontaneously from a hotter object to a colder object.
Heat flows from cold to hot.
Heat remains constant.
None of the above.
Processes that do not proceed to only one side of the reaction, some of the products may be converted back into reactants are called?
Reversible reaction
Irreversible reaction
Dynamic reaction
None of the above.
