Spontaneous chemical reactionsa. occur immediately.b. have a negative Gibbs free energy.c. have a positive Gibbs free energy.d. only occur with the assistance of enzymes.e. do not occur in biology.
Question
Spontaneous chemical reactionsa. occur immediately.b. have a negative Gibbs free energy.c. have a positive Gibbs free energy.d. only occur with the assistance of enzymes.e. do not occur in biology.
Solution
The correct answer is b. Spontaneous chemical reactions have a negative Gibbs free energy. This is because a negative Gibbs free energy indicates that the reaction can occur without the input of energy. In other words, the reaction is energetically favorable. The other options are incorrect because spontaneous reactions can occur in biology (disproving e), they do not need the assistance of enzymes (disproving d), they do not necessarily occur immediately (disproving a), and a positive Gibbs free energy would mean the reaction is not spontaneous (disproving c).
Similar Questions
Which of the following processes will always be spontaneous, regardless of the temperature?Select answer from the options belowAn endothermic reaction for which the system exhibits an increase in entropy.An exothermic reaction for which the system exhibits an increase in entropy.An endothermic reaction for which the system exhibits a decrease in entropy.An exothermic reaction for which the system exhibits a decrease in entropy.
Select all that applyWhich are true about the relationship between reaction spontaneity and change in free energy?Multiple select question.If ΔG is positive, the reaction is spontaneous under the conditions specified.If ΔG is positive, the reaction is not spontaneous under the conditions specified.If ΔG is negative, the reaction is not spontaneous under the conditions specified.If ΔG is negative, the reaction is spontaneous under the conditions specified.
Chemical reactions that have a negative Gibbs Free energy are considered_______________________ and an example of this type of chemical reactionis_____________________.a. endergonic; anabolicb. exergonic; anabolicc. endergonic; catabolicd. exergonic; catabolice. none of the above
Reactions are NOT spontaneous if:Group of answer choicesfree energy is absorbedheat is absorbedthe rate of reaction is slowentropy decreased
For a process to occur spontaneously, the system free energy or chemical potential of the system :
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