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Given: Mn2+(aq)+ 2e-

Question 4

Multiple Choice

Given:
Mn2+(aq) + 2e- Given: Mn<sup>2+</sup>(aq) + 2e<sup>-</sup> Mn(s) ; E° = -1.18 V Cu<sup>2+</sup>(aq) + 2e<sup>-</sup> Cu(s) ; E° = 0.34 V Cr<sub>2</sub>O<sub>7</sub><sup>2-</sup>(aq) + 14H<sup>+</sup>(aq) + 6e<sup>-</sup> 2Cr<sup>3+</sup>(aq) + 7H<sub>2</sub>O(l) ; E° = 1.33 V Which of the following species is the strongest reducing agent? A) Mn B) Cu C) Cr<sup>3+</sup> D) Mn<sup>2+</sup> E) Cr<sub>2</sub>O<sub>7</sub><sup>2-</sup>
Mn(s) ; E° = -1.18 V
Cu2+(aq) + 2e- Given: Mn<sup>2+</sup>(aq) + 2e<sup>-</sup> Mn(s) ; E° = -1.18 V Cu<sup>2+</sup>(aq) + 2e<sup>-</sup> Cu(s) ; E° = 0.34 V Cr<sub>2</sub>O<sub>7</sub><sup>2-</sup>(aq) + 14H<sup>+</sup>(aq) + 6e<sup>-</sup> 2Cr<sup>3+</sup>(aq) + 7H<sub>2</sub>O(l) ; E° = 1.33 V Which of the following species is the strongest reducing agent? A) Mn B) Cu C) Cr<sup>3+</sup> D) Mn<sup>2+</sup> E) Cr<sub>2</sub>O<sub>7</sub><sup>2-</sup>
Cu(s) ; E° = 0.34 V
Cr2O72-(aq) + 14H+(aq) + 6e- Given: Mn<sup>2+</sup>(aq) + 2e<sup>-</sup> Mn(s) ; E° = -1.18 V Cu<sup>2+</sup>(aq) + 2e<sup>-</sup> Cu(s) ; E° = 0.34 V Cr<sub>2</sub>O<sub>7</sub><sup>2-</sup>(aq) + 14H<sup>+</sup>(aq) + 6e<sup>-</sup> 2Cr<sup>3+</sup>(aq) + 7H<sub>2</sub>O(l) ; E° = 1.33 V Which of the following species is the strongest reducing agent? A) Mn B) Cu C) Cr<sup>3+</sup> D) Mn<sup>2+</sup> E) Cr<sub>2</sub>O<sub>7</sub><sup>2-</sup>
2Cr3+(aq) + 7H2O(l) ; E° = 1.33 V
Which of the following species is the strongest reducing agent?


A) Mn
B) Cu
C) Cr3+
D) Mn2+
E) Cr2O72-

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