Consider the following reactions. Are they spontaneous in the direction written, under standard conditions at 25°C? Standard electrode potentials in aqueous solution at 25°C are: Standard Electrode (Reduction) Potentials in Aqueous Solution at 25°C Cathode (Reduction) Standard Half-Reaction Potential, E (V) Ce+ (aq) +e Ce (ag) 1.44 3+ Co (ag) + e H Co (aq) 1.82 O2 (g) + 4H (aq) + 4e 2H20(1) 1.23 S2Og (ag) +2e 2S0, (ag) 2.01 a. Ce+ (aq) + Co2+ (aq) Ce (ag) + Co (ag) spontaneous nonspontaneous b. 2S2Os (ag) + 2H;0(1) → 4SO,² (aq) + O2 (g) + 4H* (ag) spontaneous O nonspontaneous
Consider the following reactions. Are they spontaneous in the direction written, under standard conditions at 25°C? Standard electrode potentials in aqueous solution at 25°C are: Standard Electrode (Reduction) Potentials in Aqueous Solution at 25°C Cathode (Reduction) Standard Half-Reaction Potential, E (V) Ce+ (aq) +e Ce (ag) 1.44 3+ Co (ag) + e H Co (aq) 1.82 O2 (g) + 4H (aq) + 4e 2H20(1) 1.23 S2Og (ag) +2e 2S0, (ag) 2.01 a. Ce+ (aq) + Co2+ (aq) Ce (ag) + Co (ag) spontaneous nonspontaneous b. 2S2Os (ag) + 2H;0(1) → 4SO,² (aq) + O2 (g) + 4H* (ag) spontaneous O nonspontaneous
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter17: Electrochemistry And Its Applications
Section: Chapter Questions
Problem 38QRT
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Transcribed Image Text:Consider the following reactions. Are they spontaneous in the direction written, under standard conditions at
25°C? Standard electrode potentials in aqueous solution at 25°C are:
Standard Electrode (Reduction) Potentials in Aqueous Solution at 25°C
Cathode (Reduction)
Standard
Potential, E (V)
Half-Reaction
Ce+
(aq)+e Ce+ (ag)
1.44
Co (aq) + e Co" (aq)
1.82
02 (g) + 4H (aq) + 4e 2H, O(1)
1.23
S2Og (aq) + 2e = 2S0, (aq)
2.01
a. Cet+ (aq) + Co2+ (aq) Ce(aq) + Co (aqg)
spontaneous
nonspontaneous
b. 2S2Os (ag) + 2H,O(1) → 4SO, (ag) + O2 (g) + 4H (ag)
spontaneous
nonspontaneous
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