Extraction of Metals from Their Ores

Application of The Reactivity Series of Metals in The Extraction of Metals The method that is used in the extraction of metal from its ore depends on the position of the metal in the reactivity series of metals. metals that are located lower than carbon in the reactivity series of metals can be extracted using … Read more

Series of Reactivity of Metals

When a metal reacts with oxygen to form a metal oxide, a redox reaction occurs.Metal + Oxygen → Metal oxide In this reaction, Metal is oxidised to metal ions. The oxidation number of the metal increases. Oxygen is reduced to the oxide ion. The oxidation number of oxygen decreases from 0 to -2. Metal acts … Read more

Prevention of Rusting

Controlling Rusting Steps to Control Rusting The use of a metal which is less electropositive The plating of iron with a thin layer of a metal which is less electropositive such as tin, silver or copper will prevent the iron underneath it to react with water and air, and so prevents the iron from rusting. … Read more

Corrosion as a Redox Reaction

Corrosion of metal = metal loses its electrons to form positive ions.ExampleCorrosion of ironFe → Fe2+ + 2eCorrosion of MagnesiumMg → Mg2+ + 2e The higher the position of a metal in the electrochemical series, the more electropositive (reactive) the metal is. The metal has a greater tendency to give away electrons to form the metal ion, that … Read more

Examples of Redox Reaction – Displacement of Metal

The electrochemical series is a series of arrangement of metals according to the order of the tendency of the metal to lose electrons to form positive ions. Elements which placed higher in the electrochemical series are more electropositive act as strong reducing agent can be oxidised easily The metal ions are weak oxidising agents because … Read more