Question

(a)Two of the reactions in the “Copper Cycle” are classified as oxidation-reduction (“’redox”) reactions. Identify the...

(a)Two of the reactions in the “Copper Cycle” are classified as oxidation-reduction (“’redox”) reactions. Identify the two reactions, and identify the oxidizing agent and the reducing agent in each.

(b)Which one of the redox reactions above can be classified as a single displacement reaction?

(c)One of the reactions in this experiment is classified as a decomposition reaction. Identify it:

(d)One of the reactions in this experiment is classified as a precipitation reaction. Identify it:

(e)One of the reactions in this experiment is classified as an acid-base reaction. Identify it:

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Answer #1

a)

the two redox reactions are

Cu + 4 HN03 ---> Cu(N03)2 + N02 + H20

oxidizing agent --> HN03

reducing agent --> Cu

Zn + CuS04 -> Cu + ZnS04

oxidizing agent --> Cu

reducing agent --> Zn

b) single displacement reaction is

Zn + CuS04 ---> Cu + ZnSO4

c) the decomposition reaction is

Cu(OH)2 + heat ---> CuO + H20

d) the precipitation reaction is

Cu(N03)2 + 2 NaOH --> Cu(OH)2 (s) + 2 NaN03

here

Cu(OH)2 is the precipitate in this case

e) the acid base reaction is

HN03 + NaOH ---> NaN03 + H20

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