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Consider the Following Standard Reduction Potentials

Question 46

Multiple Choice

Consider the following standard reduction potentials:
Mg2+(aq) + 2e- Consider the following standard reduction potentials: Mg<sup>2+</sup>(aq) + 2e<sup>-</sup>   Mg(s) ; E° = -2.38 V V<sup>2+</sup>(aq) + 2e<sup>-</sup>   V(s) ; E° = -1.18 V Cu<sup>2+</sup>(aq) + e<sup>-</sup>   Cu<sup>+</sup>(aq) ; E° = 0.15 V Which of the following reactions will proceed spontaneously from left to right under standard-state conditions? A) Mg(s) + 2Cu<sup>2+</sup>(aq) → Mg<sup>2+</sup>(aq) + 2Cu<sup>+</sup>(aq)  B) V<sup>2+</sup>(aq) + 2Cu<sup>+</sup>(aq) → V(s) + 2Cu<sup>2+</sup>(aq)  C) Mg<sup>2+</sup>(aq) + 2Cu<sup>+</sup>(aq) → 2Cu<sup>2+</sup>(aq) + Mg(s)  D) Mg<sup>2+</sup>(aq) + V(s) → V<sup>2+</sup>(aq) + Mg(s)  E) 2Cu<sup>2+</sup>(aq) + 2Cu<sup>+</sup>(aq) → Mg<sup>2+</sup>(aq) + Mg(s)
Mg(s) ; E° = -2.38 V
V2+(aq) + 2e- Consider the following standard reduction potentials: Mg<sup>2+</sup>(aq) + 2e<sup>-</sup>   Mg(s) ; E° = -2.38 V V<sup>2+</sup>(aq) + 2e<sup>-</sup>   V(s) ; E° = -1.18 V Cu<sup>2+</sup>(aq) + e<sup>-</sup>   Cu<sup>+</sup>(aq) ; E° = 0.15 V Which of the following reactions will proceed spontaneously from left to right under standard-state conditions? A) Mg(s) + 2Cu<sup>2+</sup>(aq) → Mg<sup>2+</sup>(aq) + 2Cu<sup>+</sup>(aq)  B) V<sup>2+</sup>(aq) + 2Cu<sup>+</sup>(aq) → V(s) + 2Cu<sup>2+</sup>(aq)  C) Mg<sup>2+</sup>(aq) + 2Cu<sup>+</sup>(aq) → 2Cu<sup>2+</sup>(aq) + Mg(s)  D) Mg<sup>2+</sup>(aq) + V(s) → V<sup>2+</sup>(aq) + Mg(s)  E) 2Cu<sup>2+</sup>(aq) + 2Cu<sup>+</sup>(aq) → Mg<sup>2+</sup>(aq) + Mg(s)
V(s) ; E° = -1.18 V
Cu2+(aq) + e- Consider the following standard reduction potentials: Mg<sup>2+</sup>(aq) + 2e<sup>-</sup>   Mg(s) ; E° = -2.38 V V<sup>2+</sup>(aq) + 2e<sup>-</sup>   V(s) ; E° = -1.18 V Cu<sup>2+</sup>(aq) + e<sup>-</sup>   Cu<sup>+</sup>(aq) ; E° = 0.15 V Which of the following reactions will proceed spontaneously from left to right under standard-state conditions? A) Mg(s) + 2Cu<sup>2+</sup>(aq) → Mg<sup>2+</sup>(aq) + 2Cu<sup>+</sup>(aq)  B) V<sup>2+</sup>(aq) + 2Cu<sup>+</sup>(aq) → V(s) + 2Cu<sup>2+</sup>(aq)  C) Mg<sup>2+</sup>(aq) + 2Cu<sup>+</sup>(aq) → 2Cu<sup>2+</sup>(aq) + Mg(s)  D) Mg<sup>2+</sup>(aq) + V(s) → V<sup>2+</sup>(aq) + Mg(s)  E) 2Cu<sup>2+</sup>(aq) + 2Cu<sup>+</sup>(aq) → Mg<sup>2+</sup>(aq) + Mg(s)
Cu+(aq) ; E° = 0.15 V
Which of the following reactions will proceed spontaneously from left to right under standard-state conditions?


A) Mg(s) + 2Cu2+(aq) → Mg2+(aq) + 2Cu+(aq)
B) V2+(aq) + 2Cu+(aq) → V(s) + 2Cu2+(aq)
C) Mg2+(aq) + 2Cu+(aq) → 2Cu2+(aq) + Mg(s)
D) Mg2+(aq) + V(s) → V2+(aq) + Mg(s)
E) 2Cu2+(aq) + 2Cu+(aq) → Mg2+(aq) + Mg(s)

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