Question

How is flotation or sinking related to the purity of a substance?​

Answer 1

Answer:

Froth floatation process: This process is best suitable for sulphide ores. It is based on different wetting characteristics of the ore and gangue particles with water and pine oil. The ore is wetted by oil and impurities are wetted by water. Ore particles are adsorbed on potassium or sodium ethyl xanthate (as collector) and come at the surface along with the froth. Froth stabiliser (cresols, aniline) stabilises the froth.

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