hemical (or voltaic) cell notes the reaction betweon copper (I1) nitrate and a z

Question

hemical (or voltaic) cell notes the reaction betweon copper (I1) nitrate and a zinc strip. AP chemistry Identify the elements being oxidized and being reduced. Describe what you would observe if that reaction were set up like this. Where are the electrons being transferred from the zinc atoms to the copper ions? coppertirg nitrate solution Write the two half reactions that are taking place in this reaction. oxidation reduction Let's separate the two half reactions physically. Label how we could do this. wire gains masS mass An electrochemical cell of the reaction: Zr(s) + Cu++(aq) Zn..(aq) . C49

Explanation / Answer

a)

Cu(NO3)2(aq) + Zn(s) = Zn(NO3)2(aq) + Cu(s)

b)

Reduction = species that GAINS electrons

Oxidation = process in which a specie will LOSS electrons

then

Zn is oxidized, Cu reduces

c)

we will observe formation of copper metla in the eelectrode

Zinc electrode will decrease in mass

d)

zinc electrode is solid zinc, it transfer e- to the other side of the cell, the elctrons are used by Cu2+ in solution to form Cu(s) on the electrode

e)

Zn(s) = Zn2+(aq) + 2e-

Cu+2 + 2e- = Cu(s)

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