- Definition of CoS
Cobalt(II) sulfide, also known as cobaltous sulfide, is a chemical compound with the formula CoS. Each molecule of CoS consists of one atom of cobalt (Co) and one atom of sulfur (S). The atomic mass of cobalt is 58.933 and that of sulfur is 32.06, therefore the molar mass of CoS totals 90.993. In the molecular structure of CoS, cobalt and sulfur link together to form ions with distinctive chemical properties.
- Characteristics: CoS
2.1 Physical properties of CoS
CoS is a solid with gray-black color. CoS has no distinctive odor and its pH cannot be determined as it is insoluble in water.
2.2 Chemical properties of CoS
Cobalt(II) sulfide has the ability to react with strong acids to form acid sulfides and cobalt. This substance can also react with other metals to form new compounds.
- Common chemical equations involving CoS
CoS can react with acids, non-metals and salts. However, please note that these reactions should be conducted under the supervision of a teacher or a professional.
- Synthesis of CoS
Cobalt(II) sulfide can be synthesized through the reaction between cobalt and sulfur under high temperature conditions. In the lab, CoS can be synthesized from cobalt and acid sulfide. In industry, CoS is commonly produced from cobalt ore containing sulfur.