1.

What is meant by vapour phase refining ? Write any one example of the process which illustrates this technique, giving the chemical equation involved .

Answer»

Solution : Vapour PHASE refining:It is a efining method in which the metal in which the metal is converted into its VOLATILE compound and collected somewhere else. It is then decomposed to abtain PURE metal .
EXAMPLE : Mond.s PROCESS for refining of zirconium .
Equation involved :
`Ni+4Co=Ooverset(330-350K)toNi(CO)_(4)`
`Ni(Co)_(4)overset(450-470K)toNi+4Co`
Or


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