Question

*redox reactions in electeochemical cells*

c) Fe/0.1 M FeSO4//0.1 M CuSO4/Cu

I soaked a porous cup in tap water for a few minutes and then i let it stand in a 100 ml beaker containing 10ml of 0.1 M FeSO4. I added enough 0.1M CuSO4 to the cup until the two liquid levels were the same height. I inserted a zinc strip into the 0.1 M FeSO4 and a shiny copper strip into the 0.1 M CuSO4. I connected the metal electrodes to the voltmeter (red electrode on the shiny copper and the black one on the zinc strip. (this was my procedure)

this is C)


(I've provided the information For A) and B) which are the 2nd and third picture)

the question i was asked for C) was,

1. Is this potential the same as that calculated from the appropriate combinations of the potential measured in a) and b)?

2. i also wanted to know if my calculations are correct for c (4th picture)

Don't worry about the diagram of the cell part right now!

These two questions are clear as can be. If you don't understand the question just let someone else answer it.

Standard Electrode · ret r yms (Half-Cell) Potentials Half-Reaction Ce (ag) Au(s) +1.50 +1.36 +1.33 +1.23 ) + 2H,00) +1.07 +0.96 +0.92 +0.85 +0.80 +0.79 02(8) +2H(ag)+2eH0ag) 68 +0.59 0.53 -0.40 02(g) + 2H20(1) + 4e--스 40H-lap Cu2-(aq) + 2e-キーCuO) 34 sor(ag) + 4H+(aq) + 2e-부스 sols) + 2Hyou). +0.22 -0.14 -0.25 Co2+(aq) + 2e Cold Fe(ag) +2cFets) Cr3+(aq) + 3e Cr(s) 044 0.74 076 2H,00+2e)+ 20H (ag) Cr'+(aq) + 2e-=-Cr(s) Mn2+(aq) + 2e Mn(3) -0.91 1 66 Mg (ag) +eg) Na+(aq) + e- Nals) Bais Ki K'(ag) + e Litag)+e L e vale refers lo Expériment 36: Redox Reactions in Electrochemical 1086 a. Zn |0.1 M Znso, 0.1 M Cuso4 |Cu Diagram the cell: Label anode, cathode, and measured cell potential, E 1086 86 direction of electron flow external wire, direction of cation and anion movement solution anode ½ reaction and E。 cathode ½ reaction and Eo cell reaction and Eo Diagram the cell: Diagram th Label anode and direction of electron flow to external wire, direc of cation and anion movement in solution 0.1 M Feso, 1 Fe ; Zn 1 0.1 M ZnS measured cell potential, E reaction and Eo anode cathode ½ reaction and E。 cell reaction and E。 Fe l 0.1 M FeS 0.1 M Cuso, I Cu Diagram the cell: Label anode, cathode, and direction of electron flow to external wire, direction of cation and anion movement in solutiorn measured cell potential, E 6aarn uこo.baav anode ½ reaction and E。 cathode ½ reaction and E。 cell reaction and E° 24 cell potential calculated from (a) and (b)*

Answer 1

Mrasured cell potential Eニ1026 m γ: , OgCV Anode+reaction enc/ E。 Zn cathode HLrca ction and E。 cell rrra ction and E。 rathode ano 1曰 o.425 Measured cell Pote n tic) E Anodet rea ction and E。 425 mv- cel eaction andf 라

Mcasarc d cen potential, EこCaz.rnv=o.cz.2.V Anode reaction and E。 cathode ½rtachon and E。 Cell rcaction and E e+C anode g.,J → cell potential rs calculated fro m appropiate (orn bin Hon ofthe in a)fb) potent İcl , measured -o-42-(-1,2) Fro m e74d Hon① and② Shows that Enli Cal (diated ǐn pori (c) s same as calcul cited from Combination of Port(a)and por+G) s司→ Xes , your calculation for par+ c is corre et onlg covrsction that. Ecell for anode 1s o.44 and dbo notice that, formula foY Ecen is EsthodeE anode