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 23.14QAP
Related questions
Question
Please solve 8,9
![Problems 6-11
Arizonium (Az) is a newly discovered element. Below is a Table listing the chemical potentials
at 300 K of the A* cation and the Az₂O oxide.
Dissolved substances
Az*
H+
Solid substances
Az
Az₂O
Liquid substances
H₂O
μº chemical potential (Joule/mole)
48,250
0
6. Determine the standard potential (Az* = 1M) for the reaction: Az* +e* = Az
(a) 0.400 V.
(b) 0.500 V (c) 0.700 V
(d) 0.800 V
7. Determine the standard potential for the reaction: Az₂O + 2H+ + 2e = 2Az +H₂O
(a) 0.991 V
(b) 0.701 V (c) 0.698 V
(d) 1.203 V
8. Calculate the equilibrium constant, K, for the chemical reaction:2Az* + H₂O=Az₂O + 2H+
(a) 10-11.3 (b) 10-10.1 (c) 10-6.0
(d) 10-16.4
(a) 5.5
Dashboard
0
-45953
9. Determine the pH value at which the potential for the two reactions,
Azt te = Az and Az₂O + 2H* +2e= 2Az +H₂O, intersect.
(b) 6.2
-237,191
000
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Calendar
(d) 10.1
10. Calculate the equilibrium potential for the reaction Az₂O + 2H+ + 2e = 2Az +H₂O
at pH= 12.
(a) 0.271 V (b) 0.631 V
(d) 0.321 V
11. Calculate the equilibrium potential for reaction for the reaction, Az+ +e* = Az
for [Az*] = 106 M.
(a) 0.340 V (b) 0.370 V
(c) 8.2
(c) 0.751 V
(c) 0.770 V
(d) 0.140 V
5
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31
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Transcribed Image Text:Problems 6-11
Arizonium (Az) is a newly discovered element. Below is a Table listing the chemical potentials
at 300 K of the A* cation and the Az₂O oxide.
Dissolved substances
Az*
H+
Solid substances
Az
Az₂O
Liquid substances
H₂O
μº chemical potential (Joule/mole)
48,250
0
6. Determine the standard potential (Az* = 1M) for the reaction: Az* +e* = Az
(a) 0.400 V.
(b) 0.500 V (c) 0.700 V
(d) 0.800 V
7. Determine the standard potential for the reaction: Az₂O + 2H+ + 2e = 2Az +H₂O
(a) 0.991 V
(b) 0.701 V (c) 0.698 V
(d) 1.203 V
8. Calculate the equilibrium constant, K, for the chemical reaction:2Az* + H₂O=Az₂O + 2H+
(a) 10-11.3 (b) 10-10.1 (c) 10-6.0
(d) 10-16.4
(a) 5.5
Dashboard
0
-45953
9. Determine the pH value at which the potential for the two reactions,
Azt te = Az and Az₂O + 2H* +2e= 2Az +H₂O, intersect.
(b) 6.2
-237,191
000
logo
Calendar
(d) 10.1
10. Calculate the equilibrium potential for the reaction Az₂O + 2H+ + 2e = 2Az +H₂O
at pH= 12.
(a) 0.271 V (b) 0.631 V
(d) 0.321 V
11. Calculate the equilibrium potential for reaction for the reaction, Az+ +e* = Az
for [Az*] = 106 M.
(a) 0.340 V (b) 0.370 V
(c) 8.2
(c) 0.751 V
(c) 0.770 V
(d) 0.140 V
5
To Do
Notifications
31
Inbox
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