Which of the following best describes a thermodynamically favorable (spontaneous) chemical reaction? It has a ΔG that is greater than zero and is endergonic. It has a ΔG that is greater than zero and is exergonic. It has a ΔG that is less than zero and is endergonic. It has a ΔG that is less than zero and is exergonic.

Which of the following best describes a thermodynamically favorable (spontaneous) chemical reaction? It has a ΔG that is greater than zero and is endergonic. It has a ΔG that is greater than zero and is exergonic. It has a ΔG that is less than zero and is endergonic. It has a ΔG that is less than zero and is exergonic.

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter6: Metabolism

Section: Chapter Questions

Problem 1VCQ: Figure 6.8 Look at each of the processes shown, and decide if it is endergonic or exergonic. In each...

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Consider a reaction with the following thermodynamic properties. AH° 77.7 kJ AS° -35.7 J/(K⚫ mol) AG 88.4 kJ This reaction: has bonds in the products that are weaker than the reactants. may have fewer and more complicated molecules in the product. will proceed very slowly. will be spontaneous at low temperatures. Submit
Which one of the following statements is completely TRUE? O When AG > 0, the reaction is BOTH product-favored (spontaneous) AND endergonic. When AG 0, the reaction is BOTH reactant-favored (nonspontaneous) AND endergonic. When AG > 0, the reaction is BOTH product-favored (spontaneous) AND exergonic. When AG > 0, the reaction is BOTH reactant-favored (nonspontaneous) AND exergonic. When AG < 0, the reaction is BOTH reactant-favored (nonspontaneous) AND exergonic.
What terms would best describe the above coupled reaction?A. it is non-spontaneous and endothermic (because the overall Go is positive)B. it is spontaneous and exothermic (because the overall Go is positive)C. it is non-spontaneous and exothermic (because the overall Go is positive)D. it is spontaneous and exothermic (because the overall Go is negative)E. it is non-spontaneous and endothermic (because the overall Go is negative)
Which of the following statements are true for BOTH the "transition state" and an "intermediate" of reaction? (This is a multi-select question, select all that apply.). Both are only observed in enzyme-catalyzed reactions. Both can be converted to product(s) or might decompose back to the reactant(s). Neither are part of the "net equation" for the reaction. Both contain covalent bonds are in the process of breaking and/or forming. Both are part of every chemical reaction. (i.e. the mechanisms of all chemical reactions, whether enzyme catalyzed or not, will have involve both a transition state and an intermediate).
On the free energy diagram shown, label the intermediate (s) and transition state(s). Is the reaction thermodynamically favorable? Reaction.
Which of the following is a description of an example of the second law of thermodynamics? Some chemical energy in glucose transforms to chemical energy in ATP. O The kinetic energy of wind turns the blades of a wind turbine. The chemical energy in gasoline is transformed to kinetic energy to drive a car. The mechanical energy of flowing water turns a turbine. Some chemical energy in gasoline is transformed to heat while driving a car.
Which of the following statements is most directly described by the first law of thermodynamics? A B с D The synthesis of highly-ordered biomolecules is coupled with the production of heat energy. All energy-transferring processes involve the loss of some of that energy into an unus- able form. Enzymes reduce the activation energy of chemical energy by stabilizing substrates at their transition states. The energy for the synthesis of glucose is provided by the absorption of light energy in chlorophyll pigments.
In a transition state diagram, which of the following are features of the transition state (TS)? There may be more than one correct answer, select all that apply. The change in energy in ground state to the transition state represents the Gibbs Free Energy If the reaction is reversible, the TS will only progress forward to form products The TS occupies a trough The TS is associated with the highest energy The TS occupies the highest peak
Which of the following are effects of catalyst that cause an increase in the rate of reaction? (This is a multi-select question. Select all that apply). a decrease in DG‡. an increase in DG. an increase in temperature. an increase in the energy of the molecules/ions of reactant. an increase in the number of molecules/ions of reactant with enough energy to overcome the activation energy barrier.
Consider the following endothermic reaction at equilibrium: H2(g) + Zn2+(aq) ⇌ Zn(s) + 2 H+(aq) Which of the following disturbances will result in the reaction going forward to re-establish equilibrium? (Select all that apply.) None of these Correct Answer Increase temperature at constant pressure. Correct! Add liquid water. Decrease in partial pressure of H2(g). Decrease container volume at constant temperature. Adding the strong acid, HNO3. (Consider any change in solution volume is negligible.) Removing some solid zinc. Adding the soluble salt, magnesium nitrate, Zn(NO3)2. Adding the soluble salt, sodium sulfide, Na2S.
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