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In an electrolysis experiment a solution of aqueous Copper(I) Bromide and phenolphthalein
In
which two carbon graphite electrodes attached to a 6V battery are inserted.
In an electrolysis experiment a solution of aqueous Coppar Bromide and phenolphthalein in which two carbon graphite electrodes attached to a 6V battery are inserted Write out all of the possible reactants in this cell (hint some reactants are lons) First reactant Second reactant Third reactant b: Write out the two possible oxidation reactions along with their odation potentials (hint there is a standard reduction voltage table on the last page of this test) Oxidation reaction C Write out the two possible reduction reactions for the cell along with their reduction potentials. (hint there is a standard reduction voltage table on the last page of this test) EM Reduction reaction d. Write out the predicted reaction at the anode Predicted Anode Reaction e. Write out the predicted reaction at the cathode Predicted Cathade Reaction

Around electrode 1 you see a yellow liquid and a brown liquid falling to the bottom of the cell At electrode 2 a pink shiny deposit is seen on the electrode itself is electrode 1 the anode or the cathode? Explain Electrode 1 is the because Is electrode 2 the cathode or the anode? Explain Electrode 2 is the because 日。 What is the pink shiny deposit on electrode 2 due to? h. What is the yellow solution around electrode 1 due to? Is the product at the anode the one that is thermodynamically or kinetically favored Comment What is the minimum cell voltage Ebattery needed for electrolysis to occur? [4 Marks) Ebattery >

Cathode (Reduction) Half-Reaction H2(g) + 2OH(aq) (pH = 7) Standard Potential E (volts) -0.41 2H2O(1) + 2e - Zn2+ (aq) + 2e - Zn(s) -0.76 2Hac) + 2e - H26) 0.00 Cu2+ (aq) + 2e → Cuis) 0.34 12(s) + 2e2") 0.54 1.36 Claig) + 2e + 2Cl (aq) Br2m + 2e + 2Br (aa) 1.07 0.82 O2(g) + 4H+ (aq) + 4e → 2H2O) (pH = 7) Au+ (aq) + 3e Au(s) 1.50 -0.28 Co2 a) + 2e - Cos) Ag (aq) + e - Ago) 0.80 -0.53 Ga *(aq) + 3e Gas Pb2+ (aq) + 2e Pb(s) -0.13 Nas) -2.71 Na (aq) + e -2.93 K+ (aq) + eks)