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Galvanic cell question, urgent
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Topic: Galvanic cell question, urgent (Read 912 times)
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yoyohs
Regular Member
Posts: 12
Mole Snacks: +0/-0
Galvanic cell question, urgent
«
on:
December 08, 2021, 02:29:15 PM »
A voltaic cell at 25
o
C consists of Mn/Mn
2+
and Cd/Cd
2+
half-cells with the initial concentrations [Mn
2+
] = 0.100 M and [Cd
2+
] = 0.0100 M. Use the Nernst equation to calculate E for this cell.
Cd
+2
(aq) + 2e- = Cd(s) . . . . . . E
o
= -0.40 V
Mn
+2
(aq) + 2e- = Mn(s) . . . . . . . E
o
= -1.18 V
this is what i did, but it is wrong.
https://drive.google.com/file/d/1HzBRnAl7CzwAbmwGWjE0z1JWF1M2sypu/view?usp=sharing
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mjc123
Chemist
Sr. Member
Posts: 2049
Mole Snacks: +296/-12
Re: Galvanic cell question, urgent
«
Reply #1 on:
December 09, 2021, 05:45:40 AM »
Write the equation for the spontaneous cell reaction. What is Q?
(Alternatively, work out the modified potentials for each electrode separately, and then combine them.)
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Galvanic cell question, urgent