Answer to Question #348478 in General Chemistry for Austine

Question

7. Consider the following half-reactions:

Half-Reaction E0 (V)  MnO4(aq) + 8 H+ + 5 e

- Mn

2+ + 4 H2O +1.52

2 C 2O7(aq) r + 14 H+ + 6 e

- Cr

3+ + 7 H2O +1.33  B 3(aq) rO + 6 H+ + 6 e

- 𝐵− + 3 H2O +1.47

2 SO4(aq) + 4 H+ + 2 e

- SO2(g) + 2 H2O +0.2  NO3(aq) + 4 H+ + 3 e

- NO(g) + 2 H2O + 0.96

(a) Identify the strongest oxidizing agent and the strongest reducing agent. (b) Which of the oxidizing agents listed is / are capable of oxidizing 𝐵−

to  B 3(aq) rO in acidic solution. (c) Write a balanced chemical equation for the reaction of 2 C 2O7(aq) r and

SO2(g) in acid medium. Is this reaction spontaneous?

(d) Write a balanced chemical equation for the reaction of 2 C 2O7(aq) r with

Mn

2+

(aq) in acid medium. Is this reaction spontaneous?

Answer 1

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