5. A student conducts a reaction at 298 K in a rigid vessel and the reaction goes to completion. The temperature of the reactio vessel drops during the reaction. Which of the following can be determined about ASº for the reaction? A) AS > 0, since the reaction is thermodynamically favorable at 298 K. BAS> 0, since the reaction is thermodynamically unfavorable at 298 K. CAS°<0, since the reaction goes nearly to completion at 298 K. D) AS <0 at 298 K, since AH<0 and AG > 0. A

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5. A student conducts a reaction at 298 K in a rigid vessel and the reaction goes to completion. The temperature of the reaction
vessel drops during the reaction. Which of the following can be determined about ASº for the reaction?
A) AS > 0, since the reaction is thermodynamically favorable at 298 K.
AS > 0, since the reaction is thermodynamically unfavorable at 298 K.
CAS<0, since the reaction goes nearly to completion at 298 K.
D) AS <0 at 298 K, since AH<0 and AG > 0.
6. An endothermic reaction is carried out under standard conditions. The equilibrium constant, Keq, for the reaction at 298 K is
Keq = 3.55 x 107. Which of the following is true about the sign of AGº for the reaction?
B
A) AG> 0 because Keq is much greater than 1.
BAGO <0 because AH > 0.
A
AGO <0 because Keq is much greater than 1.
D) AGO> 0 because AS > 0.
Eº = +V
A³+ (aq) + 3M(s) → 3 M* (aq) + A(s)
7. The redox reaction shown above is common in batteries and has a voltage equal to +V under standard conditions. Which of
the following would occur if the standard 1 molar M* solution was replaced with a 2 M solution?
с
A) The voltage of the cell would increase as Q is greater than 1.
B The voltage of the cell would decrease as Q is greater than 1.
B
The voltage of the cell would become negative as the reverse reaction is favored at [M*] greater than 1.
D) The voltage of the cell would be 0 as the [M] would bring Q and K = 1.
Transcribed Image Text:5. A student conducts a reaction at 298 K in a rigid vessel and the reaction goes to completion. The temperature of the reaction vessel drops during the reaction. Which of the following can be determined about ASº for the reaction? A) AS > 0, since the reaction is thermodynamically favorable at 298 K. AS > 0, since the reaction is thermodynamically unfavorable at 298 K. CAS<0, since the reaction goes nearly to completion at 298 K. D) AS <0 at 298 K, since AH<0 and AG > 0. 6. An endothermic reaction is carried out under standard conditions. The equilibrium constant, Keq, for the reaction at 298 K is Keq = 3.55 x 107. Which of the following is true about the sign of AGº for the reaction? B A) AG> 0 because Keq is much greater than 1. BAGO <0 because AH > 0. A AGO <0 because Keq is much greater than 1. D) AGO> 0 because AS > 0. Eº = +V A³+ (aq) + 3M(s) → 3 M* (aq) + A(s) 7. The redox reaction shown above is common in batteries and has a voltage equal to +V under standard conditions. Which of the following would occur if the standard 1 molar M* solution was replaced with a 2 M solution? с A) The voltage of the cell would increase as Q is greater than 1. B The voltage of the cell would decrease as Q is greater than 1. B The voltage of the cell would become negative as the reverse reaction is favored at [M*] greater than 1. D) The voltage of the cell would be 0 as the [M] would bring Q and K = 1.
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