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Definition of Ag2S
1.1 Name: Ag2S is a chemical compound officially known as Silver Sulfide.
1.1.2 English Name: This compound is called Silver Sulfide in English.
1.2 Atomic composition: Ag2S consists of two silver atoms (Ag) and one sulfur atom (S).
1.3 Atomic mass: The total atomic mass of Ag2S is 247.8 g/mol (107.87 g/mol for each silver atom and 32.06 g/mol for sulfur).
1.4 Ion structure: Ag2S is an ionic compound with two silver ions Ag+ and one sulfide ion S2-. -
Properties of Ag2S
2.1 Physical properties: Ag2S is a solid, black, odorless compound with no clear pH value because it is insoluble in water.
2.2 Chemical properties: Ag2S is very insoluble in water and most solvents, but it can dissolve in nitric acid forming Ag+ and SO4 2- ions. -
Common chemical equations involving Ag2S: Because Ag2S is quite stable and unreactive, there aren’t many typical reactions for Ag2S. However, it can react with strong acids like HNO3 to produce AgNO3 and H2S.
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Synthesis of Ag2S:
4.1 Laboratory synthesis: Ag2S can be prepared by combining a solution of silver nitrate AgNO3 with a solution of sodium sulfide Na2S.
4.2 Industrial synthesis: In the industry, Ag2S is usually produced by treating silver-containing ore with sulfuric acid.