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Electroplating using electrolysis

The Best way of learning electroplating

Balancing chemical equations algebraically

Balancing chemical equations algebraically

Aluminium Extraction Notes

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Aluminium extraction Extraction method: Aluminium is  a very reactive metal. It cannot be extracted using carbon because it is above carbon in the reactivity series ie. it is  more reactive than carbon. So it is extracted through    electrolysis . Aluminium ore: The aluminium ore is   bauxite ( impure  aluminium oxide.) Major impurities in bauxite:   The major impu rities include   S ilicon dioxide, I orn Oxide  and T itanium dioxide. ( SIT )  Purifying the aluminium oxide: Bauxite ore is heated in a pressure vessel along with a  sodium hydroxide  solution at a temperature of 150 to 200 °C.  At these temperatures, the  aluminium  is dissolved to form   sodium aluminate  ( NaAlO 2  )  The insoluble impurities are removed by filtration. The sodium aluminate undergoes further treatment to form pure aluminium oxide. Nature of the electrolyte: The aluminium oxide must be melted so that electricity can pass through it. Reducing the temperature of the electro

Stoichiometry solved IGCSE past paper-2004

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IGCSE topic wise past papers

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