Skip to main content
Pearson+ LogoPearson+ Logo
Ch. 8 - Energy and Enzymes: An Introduction to Metabolism
All textbooksFreeman 8th EditionCh. 8 - Energy and Enzymes: An Introduction to MetabolismProblem 4
Previous problem
Next problem

Chapter 8, Problem 4

What factors determine whether a chemical reaction is spontaneous or not?

Verified Solution
Video duration:
49s
This video solution was recommended by our tutors as helpful for the problem above.
Was this helpful?

Video transcript

Hello everyone. And in today's video we have a very short problem. So let's jump straight into it. So the majority of spontaneous reactions blank the entropy of the system. So what is the result of a spontaneous reaction on the entropy of the system? Remember that these spontaneous reactions are usually favorable? So they do not need energy in order to start the process. Now the second law of thermodynamics states that the entropy of the universe tends to increase. So this is what's favorable. So if we're talking of spontaneous reactions or favorable reactions, they're also going to increase the entropy of the system. So I was going to be the final answer to our question. I really hope this video helped you and I hope to see you on the next one.
Previous problem
Next problem
Related Practice
Textbook Question

Which of the following correctly describe an exergonic reaction? Select True or False for each statement. T/F The products have lower Gibbs free energy than the reactants. T/F Activation energy is required for the reaction to proceed. T/F The products always have lower entropy than the reactants. T/F The reaction always occurs quickly.

902
views
Textbook Question

What is a transition state? a. the shape adopted by an enzyme that has an inhibitory molecule bound at its active site b. the amount of kinetic energy required for a reaction to proceed c. the intermediate complex formed as covalent bonds in the reactants are being broken and re-formed during a reaction d. the enzyme shape after binding an allosteric regulatory molecule

895
views
Textbook Question

How does pH affect enzyme-catalyzed reactions? a. Protons serve as substrates for most reactions. b. Energy stored in protons is used to drive endergonic reactions. c. Proton concentration increases the kinetic energy of the reactants, enabling them to reach their transition state. d. The concentration of protons affects an enzyme's folded structure and reactivity.

1003
views
Textbook Question

Which of the following correctly describe an active site? Select True or False for each statement. T/F It is the location in an enzyme where substrates bind. T/F It is the place where a molecule or ion binds to an inactive enzyme to induce a shape change to make it active. T/F It is the portion of an enzyme where chaperones bind to help enzymes fold. T/F It is the site on an enzyme where catalysis occurs.

965
views
Textbook Question

Explain the lock-and-key model of enzyme activity. What is incorrect about this model?

783
views
Textbook Question

If you were to expose glucose to oxygen on your lab bench, why would you not expect to see it burn as described by the reaction in Figure 8.6? a. The reaction is endergonic and requires an input of energy. b.The reaction is not spontaneous unless an enzyme is added. c. The sugar must first be phosphorylated to increase its potential energy. d. Activation energy is required for the sugar and oxygen to reach their transition state.

794
views