Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Table 20.2 Half-reaction Cr³+ (aq) + 3e → Cr (s) Fe2+ (aq) + 2e →→ Fe (s) Fe3+ (aq) + e → Fe2+ (s) Sn4+ (aq) + 2e Sn2+ (aq) E° (V) -0.74 -0.440 +0.771 +0.154 22) Which of the following reactions will occur spontaneously as written? A) 3Sn4+ (aq) + 2Cr (s) 2Cr3+ (aq) + 35n2+ (aq) B) 3Fe2+ (aq) C) Sn4+ (aq) + Fe³+ (aq) D) Sn4+ (aq) + Fe2+ (aq) E) 3Fe (s) + 2Cr3+ (aq) Fe (s) + 2Fe3+ (aq) Sn2+ (aq) + Fe2+ (aq) Sn2+ (aq) + Fe (s) 2Cr (s) + 3Fe2+ (aq)
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Transcribed Image Text:Table 20.2 Half-reaction Cr³+ (aq) + 3e → Cr (s) Fe2+ (aq) + 2e →→ Fe (s) Fe3+ (aq) + e → Fe2+ (s) Sn4+ (aq) + 2e Sn2+ (aq) E° (V) -0.74 -0.440 +0.771 +0.154 22) Which of the following reactions will occur spontaneously as written? A) 3Sn4+ (aq) + 2Cr (s) 2Cr3+ (aq) + 35n2+ (aq) B) 3Fe2+ (aq) C) Sn4+ (aq) + Fe³+ (aq) D) Sn4+ (aq) + Fe2+ (aq) E) 3Fe (s) + 2Cr3+ (aq) Fe (s) + 2Fe3+ (aq) Sn2+ (aq) + Fe2+ (aq) Sn2+ (aq) + Fe (s) 2Cr (s) + 3Fe2+ (aq)
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Step 1: Reduction and oxidation
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Step 2: Choosing spontaneous reactions
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Step 3: Choosing spontaneous reactions
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