Graphite rods are frequentlyreplaced in Hall-Heroult's process of extr – InterviewSolution

1.	Graphite rods are frequentlyreplaced in Hall-Heroult's process of extracting aluminium metal. Why ?
Answer» SOLUTION :Fluoride ions move towards graphiteanodeand are dischared to give active fluorine. Thisfluorine displaces oxygen of ALUMIN. Oxygen reacts withgraphite. Thusgraphite gets corroded and is to be replaced frequently in the Hall-Heroult.s process of EXTRACTING ALUMINIUM.

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