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प्रश्न
Which method is used for refining Zr and Ti? Explain with equation.
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उत्तर
van Arkel method is used for refining Zr and Ti. In this method crude metal is heated with iodine to form volatile unstable compound. The compound is then decomposed to get pure metal.
\[\ce{\underset{Impure}{Zr(s)} + 2I2 ->[870K] ZrI4}\]
\[\ce{ZrI4 ->[1800K] \underset{Pure}{Zr} + 2I2}\]
\[\ce{\underset{Impure}{Ti} + 2I2 ->[523K] TiI4(g)}\]
\[\ce{TiI4 ->[1700K] \underset{Pure}{Ti} + 2I2}\]
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संबंधित प्रश्न
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Vapour phase refining
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Give two requirements for vapour phase refining.
Match the items of Column I with the items of Column II and assign the correct code:
| Column I | Column II |
| (A) Coloured bands | (1) Zone refining |
| (B) Impure metal to volatile complex | (2) Fractional distillation |
| (C) Purification of Ge and Si | (3) Mond Process |
| (D) Purification of mercury | (4) Chromatography |
| (5) Liquation |
Explain the following:
Vapour phase refining method is used for the purification of Ti.
Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature?
Electrolytic reduction method is used for the extraction of ______.
Refining using liquation method is the most suitable for metals with ______.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
Describe a method for refining nickel.
