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Electrode Potential in Deposition Process
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Learn how electrode potential changes with concentration for deposition at Pt and Hg electrodes. Find out at what potential CuII and PbII start depositing.
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Electrode Potential in Deposition Process
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Presentation Transcript
1) How does the electrode potential change with concentrationa)for deposition at a Pt electrode?b)for deposition at Hg? • a) For reduction, the required potential gets more -ve as the concentration decreases • b)For redn, the required potential gets more -ve as the % deposition increases • The actual concentration has no effect at Hg
2)At what potential will 0.035 M CuII start depositing?Electrode is PtEo = 0.339V
At what potential will 0.035 M PbII be 99.9% deposited?Assume electrode is PtEo=-0.126V
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