Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
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Chapter 22, Problem 22.15QAP
Interpretation Introduction
Interpretation:
The initial potential of the given cell should be determined.
Concept introduction:
For the generation of current in an electrolytic cell an enough potential difference is required. This potential difference overcomes the opposition offered by the ions and electrons. The potential difference is expressed as the product of current flowing in the circuit and the resistance of the cell.
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Consider the following galvanic cell:
Agls) | Ag"(3.0 x 104 M) || Fe3"(1.1 × 10³ M), Fe²"(0.040 M) | Pt(s)
Choose the correct cell potential.
O Ecel - - 0.12V
Ecell = + 0.09 V
O Ese = - 0.15 V
O Eçel = + 0.12 V
eTextbook and Media
Hint
Determine the sign of the electrodes in the cell.
The left side half-cell is the
v and
charged.
The right side half cell is the
v and
charged.
Enter the equation for the spontaneous cell reaction. (Enter states of matter in your answer.)
3. Use a table of standard thermodynamic values to predict the standard cell potential at 71 C:
Cu(s) | CuSO4|| AgNO3|Ag(s)
Assume that the values of AH and AS are independent of temperature.
Enter the correct numeric value to 2.0% precision. Express scientific notation like 4.29E-15
volts
Grade This Exercise
+||
Σ
D.
For the cell shown, the measured cell potential, Ecell, is-0.3621 V at 25 °C.
Pt(s) | H, (g, 0.853 atm) | H* (aq, ? M) || Cd²+(aq, 1.00 M) | Cd(s)
The balanced reduction half-reactions for the cell, and their respective standard reduction potential values, E°, are
2H*(aq) + 2 e¯ – H, (g)
A 00'0 = 07
24,
Cd2+ (aq) + 2 e Cd(s)
E° = -0.403 V
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Chapter 22 Solutions
Principles of Instrumental Analysis
Ch. 22 - Calculate the electrode potentials of the...Ch. 22 - Prob. 22.2QAPCh. 22 - For each of the following half-cells, compare...Ch. 22 - For each of the following half-cells, compare...Ch. 22 - Prob. 22.5QAPCh. 22 - Calculate the electrode potentials for the...Ch. 22 - Calculate the theoretical potential of each of the...Ch. 22 - Calculate the theoretical potential of each of the...Ch. 22 - Prob. 22.9QAPCh. 22 - Prob. 22.10QAP
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