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Answer to Question #56238 in Other Chemistry for Yechan

Question #56238
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?
Expert's answer
2Al + 3Ag2S → 6Ag + Al2S3
a) Silver is reduced. Ag+ + 1e → Ag0; its charge is +1 before and becomes zero after.
b) Aluminum is oxidized. Al0 – 3e → Al3+; its charge is zero before and becomes +3 after.

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