Consider only the species (at standard conditions) Na+, Cl-, Ag+, Ag, Zn++, Zn, Pb in ...?
answering the following questions. Give reasons for your answers.
a. Which is the strongest oxidizing agent?
b. Which is the strongest reducing agent?
c. Which species can be oxidized by SO4-- in acid?
d. Which species can be reduced by Al(s)?
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To determine the answers to these questions, we need to understand the concept of oxidation and reduction potentials. Oxidation potential is a measure of the tendency of a species to lose electrons and get oxidized, while reduction potential is a measure of the tendency of a species to gain electrons and get reduced.
To find the strongest oxidizing agent, we need to look for the species with the highest oxidation potential. On the other hand, the strongest reducing agent will be the one with the lowest reduction potential. Let's analyze each species one by one:
a. Which is the strongest oxidizing agent?
To find the strongest oxidizing agent, we need to look for the species with the highest oxidation potential. Among the given species, Ag+ has the highest oxidation potential as it readily accepts an electron to form Ag. Therefore, Ag+ is the strongest oxidizing agent among the listed species.
b. Which is the strongest reducing agent?
To find the strongest reducing agent, we need to look for the species with the lowest reduction potential. Among the given species, Zn has the lowest reduction potential as it easily loses electrons to form Zn2+. Therefore, Zn is the strongest reducing agent among the listed species.
c. Which species can be oxidized by SO4-- in acid?
To identify the species that can be oxidized by SO4-- in acid, we need to compare the standard reduction potentials of the species with that of SO4--. From the given species, only Zn has a lower reduction potential than SO4--. Hence, Zn can be oxidized by SO4-- in an acid solution.
d. Which species can be reduced by Al(s)?
To determine the species that can be reduced by Al(s), we need to compare the standard reduction potentials of the species with that of Al(s). Among the given species, only Ag+ has a higher reduction potential than Al(s). Hence, Ag+ can be reduced by Al(s).
In summary:
a. The strongest oxidizing agent is Ag+.
b. The strongest reducing agent is Zn.
c. The species that can be oxidized by SO4-- in acid is Zn.
d. The species that can be reduced by Al(s) is Ag+.