2. What range of cathode potentials versus the saturated calomel electrode (SCE) can be used to quantitatively separate Ag+ and Ni2+ by electrolytic deposition? Assume that the sample solution is initially 0.1000 M in each ion and the quantitative removal of an ion is realized when only 1 part in 10,000 remains undeposited. The potential of the standard calomel electrode is ESCE = 0.244V. Ag* + 1e → Ag (s) Ni2+ + 2e¯ +→ Ni (s) = 0.8 V ERed Eoxid f-0.25 V
2. What range of cathode potentials versus the saturated calomel electrode (SCE) can be used to quantitatively separate Ag+ and Ni2+ by electrolytic deposition? Assume that the sample solution is initially 0.1000 M in each ion and the quantitative removal of an ion is realized when only 1 part in 10,000 remains undeposited. The potential of the standard calomel electrode is ESCE = 0.244V. Ag* + 1e → Ag (s) Ni2+ + 2e¯ +→ Ni (s) = 0.8 V ERed Eoxid f-0.25 V
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter23: Potentiometry
Section: Chapter Questions
Problem 23.7QAP
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Transcribed Image Text:2. What range of cathode potentials versus the saturated calomel electrode (SCE) can be used to
quantitatively separate Ag+ and Ni2+ by electrolytic deposition? Assume that the sample
solution is initially 0.1000 M in each ion and the quantitative removal of an ion is realized when
only 1 part in 10,000 remains undeposited. The potential of the standard calomel electrode is
ESCE = 0.244V.
Ag* + 1e → Ag (s)
Ni2+ + 2e¯ +→ Ni (s)
= 0.8 V
ERed
Eoxid f-0.25 V
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