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Solid aluminum is added to a solution of sulfuric acid and hydronium (hydrated hydrogen) ions, forming...

Solid aluminum is added to a solution of sulfuric acid and hydronium (hydrated hydrogen) ions, forming a solution that consists of aluminum(III) ion, liquid water, and solid sulfur.

(a)    Using a table of standard reduction potentials, write the half-reaction equations for each of the redox reactions indicated.

(b)    Modify the half-reactions, if necessary, and add them to yield a balanced net ionic equation.

(c)    Calculate E° for the reaction as written.

(d)    State and justify the favored direction of the reaction.

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