6. Consider a voltaic cell based on the following cell reaction: Ni(s) + At2(s) ? Ni2+(aq)...
Ni(s) + At2(s) ? Ni2+(aq) + 2At– (aq)
Given that the standard cell emf is 0.55 V, what is the standard reduction potential for astatine? [E°(Ni2+/Ni) = –0.25 V]
Homework Answers
E0(cell) = E0(At2/At-) - E0(Ni2+/Ni)
0.55 = E0(At2/At-) - (-0.25)
E0(At2/At-) = +0.30 V
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6. Consider a voltaic cell based on the following cell
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V
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V
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V
A voltaic cell is constructed that uses the following reaction and operates at 298 K. Zn(s)...
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V
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V
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V
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A voltaic cell is constructed that uses the following reaction
and operates at 298 K.
Zn(s) + Ni2+(aq)
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(a) What is the emf of this cell under standard
conditions?
V
(b) What is the emf of this cell when [Ni2+] = 3.51
M and [Zn2+] = 0.191 M?
V
(c) What is the emf of the cell when [Ni2+] = 0.137
M and [Zn2+] = 0.878 M?
V
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(a) What is the emf of this cell under standard
conditions?
V
(b) What is the emf of this cell when [Ni2+] = 2.58
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V
(c) What is the emf of the cell when [Ni2+] = 0.211
M and [Zn2+] = 0.837 M?
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