Aluminum + silver sulfide = ?

Question

Aluminum + silver sulfide = ?

a) what element is reduced and what is its charge before and after?

b) what element is oxidized and what is its charge before and after?

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Answer 1 · 2015-11-14T20:56:57

Aluminum should reduce the silver ion. The silver ion should oxidize the aluminum.

#Al(s) + 3Ag^+ rarr 3Ag^+ +Al^(3+)#

Thus if you place aluminum foil in silver nitrate solution, the foil should darken as metallic silver precipitates.