Physics · Electrochemistry
Identify the strongest reducing agent among the given species based on the following standard reduction potentials: 1. MnO2(s) + 4H+(aq) + 2e- → Mn2+(aq) + 2H2O(l); E° = +1.22 V2. Hg2SO4(s) + 2e- → 2Hg(l) + SO42-(aq); E° = +0.61 V3. SnO2(s) + 2H2O(l) + 4e- → Sn(s) + 4OH-(aq); E° = -0.15 V4. Cr(OH)3(s) + 3e- → Cr(s) + 3OH-(aq); E° = -1.48 V
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Hg
- 2Sn
- 3MnO2
- 4Cr✓
Correct answer
Cr
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