36: Some Important Compounds
1. Ammonia Uses - Ammonia solutions are used to clean, bleach, and deodorize; to etch aluminum; to saponify (hydrolyze) oils and fats; and in chemical manufacture. - Ammonia is also used in large amounts in the Ostwald process for the synthesis of nitric acid; in the Solvay process for the synthesis of sodium carbonate; in the synthesis of numerous organic compounds used as dyes, drugs, and in...
37: Alloys
An alloy is a mixture of two or more metals fused together in molten state. Metals when melted tend to dissolve in one another forming alloys. The various properties of a metal like malleability, ductility, strength, hardness, resistance to corrosion and appearance can be improved by mixing with other metals. Alloys have properties different from its constituents. Al - Alloy property / Reason fo...
38: Minerals and Ores
Metals and their compounds are found in earth as natural elements known as minerals. Ores are minerals from which metals are extracted at low cost with minimum effort. Ores contains metal compounds with a percentage of impurities. All th'e ores are minerals, but all the minerals are not ores. Metals and their Ores Oxides Carbonates Halides Sulphides sulphates Zincite(ZnO) Marble or Lime st...
39: Electrolytes and Electrolysis
In any chemical reaction, the existing chemical bonds are broken and new chemical bonds are formed. Hence, all chemical reactions are fundamentally electrical in nature since electrons are involved in some way or the other in all types·of chemical bonding. Many chemical reactions utilize electrical energy, whereas others can be used to produce electrical energy. As electrical energy involves the...
40: Definitions of oxidation and reduction (REDOX)
Oxidation and reduction in terms of oxygen transfer Definitions - Oxidation is gain of oxygen. - Reduction is loss of oxygen. Oxidising and reducing agents An oxidising agent is substance which oxidises -something else. In the above example, the iron(III) oxide is the oxidising agent. A reducing agent reduces something else. In the equation, the carbon monoxide is the reducing agent. - Oxid...