sure your diagram on the previous page matches this diagram wire Zn Anode Cathod
ID: 591930 • Letter: S
Question
sure your diagram on the previous page matches this diagram wire Zn Anode Cathode sat bridge Cu.. An electrochenical cell of the reaction What would you observe as this reaction is proceeding. Draw and label an electrochemical cell for the reaction when a silver strip is placed in a solution of silver acetate in one beaker and a piece of iron is placed in a solution of iron (1) chloride in the other. Write the reactions happening at the anode and the cathode. anode (oxidation or reduction?) cathode (oxidation or reduction?) What would you observe happening as the reaction proceeded?
Explanation / Answer
As the reaction proceeds ,you will find that zinc is getting depleted and becoming thinner ,while copper is getting deposited on electrode and becoming thicker.
The overall reaction should be;
2Ag+(aq) + Fe(s) -------> Fe2+(aq) + Ag(s)
In the above diagram just replace Cu by Ag and Zn by Fe and Zn++ by Fe++ and Cu++ by Ag+ the diagram will be exactly same,only thing that will change is electrodes and electrolytic solution
For example in place of Zn++ , you just have to put Fe++
cathode is where reduction occurs
Ag has higher reduction potential than Fe, so it will get reduced
Cathode
Ag+ + e- ------>Ag(s)
Anode
Fe -------->Fe++ + 2e-
we will observe that Fe electrode is getting thinner and Ag electrode will get thicker by deposition
2.
Reaction between Cu(NO3)2 + Zn
Cu(NO3)2 + Zn(s) ------->Zn(NO3)2 + Cu(s)
Zinc is getting oxidized while Cu is getting reduced
Zinc electrode will deplete and Cu will deposit on it
electrons are being transferred at electrode and electrolyte boundary.
Oxidation:
Zn ------->Zn++ + 2e-
reduction
Cu++ + 2e- ------>Cu
this is exactly as above two diagrams
comment back if you are not able to get the diagram,I will help thanks!
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