Chemical Reactions of Sulphide
Sulphide ions undergo significant chemical reactions and have unique properties:
Reaction of Sodium Sulphide with Water: In aqueous alkaline solutions of Na2S, sulphide (S 2−) converts to hydrosulphide (SH−) following contact with water:
S 2− + H2O → SH − + OH −
Reaction between Sulphides and Acids: The treatment of sulphide salts with acids generates hydrogen sulphide (H2S):
S 2− + H + → SH −
SH − + H + → H2S
Metal sulphides react with halogens to form sulphur and metal salts.
8 MgS + 8 I2 → S8 + 8 MgI2
Oxidation of sulphide in the presence of an appropriate oxidizer generates sulfur:
16 HNO3 + 24 H2S → 16 NO + 3 S8 + 32 H2O
The oxidation of sulphide produces a variety of compounds depending on the reaction circumstances, including elemental sulphur, polythionates, sulphite, polysulphides, and sulphate.
Sulphide
Sulphide is a chemical product generated when sulphur reacts with another element, usually a metal. It is frequently found in minerals such as pyrite (fool’s gold) and galena. Sulphides frequently emit unique odours (such as rotten eggs), and some are hazardous. They have a variety of purposes in industry, including mining for metals such as copper and lead. Sulphides also have a role in natural processes such as volcanic gas production and some biological activities.
This article deals with sulphides, their basic properties, formula, structure, reactions and commonly used sulphide compounds.
Table of Content
- What are Sulphides?
- Classes of Sulphides
- Metal Derivatives of Sulphide
- Preparation of Sulphide
- Structure of Sulphides
- Chemical Reactions of Sulphide
- Sulphide, Sulphite and Sulphate
- Sulpfide Applications
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