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HELP!! I do not understand this at alll Be sure to answer all parts. A galvanic...

HELP!! I do not understand this at alll

Be sure to answer all parts.

A galvanic cell with Ecell = 0.30 V can be constructed using an iron electrode in a 1.0 M Fe(NO3)2 solution, and either a tin electrode in a 1.0 M Sn(NO3)2 solution, or a chromium electrode in a 1.0 M Cr(NO3)3 solution even though Sn2+/Sn and Cr3+/Cr have different reduction potentials.

Give the overall balanced reaction for Fe-Sn cell.
Do not include the states of matter.


Give the overall balanced reaction for Fe-Cr cell.
Do not include the states of matter.
_______


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Answer #1

1 . Fe + Sn(NO3)2 --> Fe(NO3)2   + Sn

2. 3Fe + 2Cr(NO3)3 --> 2Fe(NO3)2 +2 Cr

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