Homework Answers
The above statement is true.
When ΔG is negative, a process will proceed spontaneously and is referred to as exergonic. Although ΔG is temperature dependent, it's generally okay to assume that the ΔH and ΔS values are independent of temperature as long as the reaction does not involve a phase change.
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True or False: A reaction with an increase in entropy and AG<O will only occur when...
QUESTION 6 True or false: Anaerobic organisms cannot make ATP. True O False QUESTION 7 Which...
QUESTION 6 True or false: Anaerobic organisms cannot make ATP. True O False QUESTION 7 Which of the following is a reactant of the first reaction of glycolysis? O Glucose O ADP ОАТР O 02 O Both glucose and ATP QUESTION 8 Each of the following is a high-energy product of glycolysis. From which of these can anaerobic organisms harvest the stored energy? I.e. Which of these is/are useful to an anaerobe? ОАТР O NADH O Pyruvate O All of...
8. Indicate whether the following statements are true or false: a. If the free energy,AG,ofareaction is...
8. Indicate whether the following statements are true or false: a. If the free energy,AG,ofareaction is negative, then the entropy,AS,must be positive b. Anendergonicreactionisone forwhichAGispositive. c. Increasing the temperature usually increases the rate of a chemical reaction because it increases rate of movement of molecules d. A reaction that releases heat (ΔH) is termed exothermic, while a reaction that releases free energy, Δ G, is termed exergonic e. The transition state of a reaction is always at a higher (unfavorable)...
Determine if the statement given is true or false. If it is false, change the underlined...
Determine if the statement given is true or false. If it is false, change the underlined word(s) so that the statement reads true. ___ Within a closed system, the amount of energy is variable over time. ___ A fire creates energy. ___ The second law of thermodynamics is concerned with entropy. ___ Photosynthesis and similar reactions decrease entropy. ___ Eventually, all molecules in the universe will become randomly dispersed. ___ Reactions that release energy are endergonic. ___ Enzymes increase the...
5. True/False: For a given transfer of energy, a greater change in entropy occurs when the...
5. True/False: For a given transfer of energy, a greater change in entropy occurs when the temperature is high. False, because as temperature decreases there is a greater change in entropy. False, because only heat flow affects the change in entropy, not temperature. True
Classify each of the statements as true or false. True False Answer Bank The entropy of...
Classify each of the statements as true or false. True False Answer Bank The entropy of a substance increases when a liquid vaporizes to a gas at any temperature. Entropy decreases as the temperature increases. An exothermic reaction is always spontaneous. Product formation is always favored in a reaction with a negative AH° and a negative AS. For an endothermic reaction, a decrease in temperature results in a decrease in the equilibrium constant. A reaction will have an equilibrium constant...
For a reaction with AG < 0, which statement is true? Select one: a. Rate is...
For a reaction with AG < 0, which statement is true? Select one: a. Rate is first orders o b. The reaction is endothermic Oc. Keq 0 O d. Keq > 0 e. The reaction is exothermic
5. How can a chemical reaction that is energetically unfavorable under standard conditions (AG"'>0) occur in...
5. How can a chemical reaction that is energetically unfavorable under standard conditions (AG"'>0) occur in a cell?
An endothermic reaction with positive entropy change can be spontaneous only at low temperatures True or...
An endothermic reaction with positive entropy change can be spontaneous only at low temperatures True or false
PLEASE EXPLAIN WHY EACH ANSWER IS TRUE OR FALSE 6. The standard free energy AG° of...
PLEASE EXPLAIN WHY EACH ANSWER IS TRUE OR FALSE
6. The standard free energy AG° of the reaction A +B C following statements true or false. D is +3 kJ/mol. Mark the The standard free energy of the reaction can be calculated from the free energies of formation of A, B, C, and D from the elements. The reaction is endothermic under standard state conditions. One way to get the reaction to proceed to the right is to increase the...
True or false ? 1. An exothermic reaction that results in a decrease of entropy for...
True or false ?
1. An exothermic reaction that results in a decrease of entropy for the system can be negative with respect to AG. 2. Given the following half-reactions, Copper will reduce Tin. Cu2 (aq) +2eCu(s) +0.34 V Sn2 (aq) 2e Sn(s) -0.14 V 3. The equivalence point for the titration of a weak acid with a strong base is at a pH below 7 4. Chromium is being oxidized in the following equation. Cr20, (aq) + I(aq) Cr...
QUESTION 6 True or false: Anaerobic organisms cannot make ATP. True O False QUESTION 7 Which of the following is a reactant of the first reaction of glycolysis? O Glucose O ADP ОАТР O 02 O Both glucose and ATP QUESTION 8 Each of the following is a high-energy product of glycolysis. From which of these can anaerobic organisms harvest the stored energy? I.e. Which of these is/are useful to an anaerobe? ОАТР O NADH O Pyruvate O All of...
8. Indicate whether the following statements are true or false: a. If the free energy,AG,ofareaction is negative, then the entropy,AS,must be positive b. Anendergonicreactionisone forwhichAGispositive. c. Increasing the temperature usually increases the rate of a chemical reaction because it increases rate of movement of molecules d. A reaction that releases heat (ΔH) is termed exothermic, while a reaction that releases free energy, Δ G, is termed exergonic e. The transition state of a reaction is always at a higher (unfavorable)...
Determine if the statement given is true or false. If it is false, change the underlined word(s) so that the statement reads true. ___ Within a closed system, the amount of energy is variable over time. ___ A fire creates energy. ___ The second law of thermodynamics is concerned with entropy. ___ Photosynthesis and similar reactions decrease entropy. ___ Eventually, all molecules in the universe will become randomly dispersed. ___ Reactions that release energy are endergonic. ___ Enzymes increase the...
Classify each of the statements as true or false. True False Answer Bank The entropy of a substance increases when a liquid vaporizes to a gas at any temperature. Entropy decreases as the temperature increases. An exothermic reaction is always spontaneous. Product formation is always favored in a reaction with a negative AH° and a negative AS. For an endothermic reaction, a decrease in temperature results in a decrease in the equilibrium constant. A reaction will have an equilibrium constant...
For a reaction with AG < 0, which statement is true? Select one: a. Rate is first orders o b. The reaction is endothermic Oc. Keq 0 O d. Keq > 0 e. The reaction is exothermic
5. How can a chemical reaction that is energetically unfavorable under standard conditions (AG"'>0) occur in a cell?
PLEASE EXPLAIN WHY EACH ANSWER IS TRUE OR FALSE
6. The standard free energy AG° of the reaction A +B C following statements true or false. D is +3 kJ/mol. Mark the The standard free energy of the reaction can be calculated from the free energies of formation of A, B, C, and D from the elements. The reaction is endothermic under standard state conditions. One way to get the reaction to proceed to the right is to increase the...
True or false ?
1. An exothermic reaction that results in a decrease of entropy for the system can be negative with respect to AG. 2. Given the following half-reactions, Copper will reduce Tin. Cu2 (aq) +2eCu(s) +0.34 V Sn2 (aq) 2e Sn(s) -0.14 V 3. The equivalence point for the titration of a weak acid with a strong base is at a pH below 7 4. Chromium is being oxidized in the following equation. Cr20, (aq) + I(aq) Cr...
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