Physics · Electrochemistry
Given the standard reduction potentials: Zn2+ + 2e- → Zn(s); E° = -0.76 V Cu2+ + 2e- → Cu(s); E° = +0.34 V Which of the following redox reactions is spontaneous under standard conditions?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Cu(s) + Zn2+ → Cu2+ + Zn(s)
- 2Zn2+ + Cu2+ → Zn(s) + Cu(s)
- 3Cu2+ + Zn(s) → Cu(s) + Zn2+✓
- 4Zn2+ + Cu(s) → Zn(s) + Cu2+
Correct answer
Cu2+ + Zn(s) → Cu(s) + Zn2+
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