Describe Van Arkel method to obtain metals of high purity.

Solution

Van arkel developed a method is based on the thermal decomposition and is used for getting pure metal. In this method, the metal is converted into a volatile compound, while impurities remain unaffected during compound formation. The resulting compound is then decomposed to get pure metal. for example this method is used for refining Zirconium or Titanium:

For example

Ti + 2I₂ → TiI₄(gas) + heat → Ti +2I₂^{impure compound pure}

Some More Questions From General Principles And Processes of Isolation Of Elements Chapter

What criterion is followed for the selection of the stationary phase in chromatography?

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General Principles And Processes Of Isolation Of Elements

Describe Van Arkel method to obtain metals of high purity.

Some More Questions From General Principles And Processes of Isolation Of Elements Chapter

What criterion is followed for the selection of the stationary phase in chromatography?

What is the role of cryolite in the metallurgy of aluminium?

Why is zinc not extracted from zinc oxide through reduction using CO?

What is the role of graphite rod in the electrometallurgy of aluminium?

Predict conditions under which Al might be expected to reduce MgO.

Define the term gangue or matrix.

Define the term flux.

Deine the term slag.

Why magnesium oxide is used for the lining in steel making furnance?

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