I think i correctly wrote the oxidation and reduction half reactions for the fir

Question

I think i correctly wrote the oxidation and reduction half reactions for the first two areas, but not sure how i need to do the last part were i rank them in decreasing order of ozidizing stregth. if anyone could give me a pointer much apprciated thanks

Write oxidation and reduction half reaction equations and a them to the net lonic equation for the metal metal ion reaction involving zinc and lead that did occur t A 21 12e Write oxidation and reduction half-reaction equations and add them produce the net ionic equation for the metal metal ion reaction involving copper and silver that did OCCur. Write the five reduction half-reaction equations for Part 1 in which the oxidizing agents are arranged in order of decreasing strength from top to bottom (i.e. Ag e Ag). 2 A

Explanation / Answer

Zn2+ + 2 e Zn(s) 0.7618

Pb2+ + 2 e Pb(s) 0.126

Clearly, Zn will oxidize, so it must be inverted:

Pb2+ + 2 e Pb(s) E = 0.126 (reduction)

Zn(s) Zn2+ + 2 e E = 0.7618 (oxidation)

Q2.

Cu2+ + 2 e Cu(s) +0.337

Ag+ + e Ag(s) +0.7996

Ag is going to reduce, so invert Cu

Cu(s)Cu2+ + 2 e E = -0.337

2Ag+ +2 e 2Ag(s) E = +0.7996

Q3.

oxidizing agent--> will favour oxidation, will reduce --> it is the Pb+2

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