The Van Arkel method for the purification of | vedclass

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Question

(A) The Van Arkel method is used for refining metals like $Ti$ and $Zr$. In this process,the crude metal is heated in an evacuated vessel with iodine

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Volatile stable compound

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(A) The Van Arkel method is used for refining metals like $Ti$ and $Zr$. In this process,the crude metal is heated in an evacuated vessel with iodine to form a volatile stable compound. For example: $Ti + 2I_2 \xrightarrow{500 \ K} TiI_4 	ext{ (Volatile stable compound)}$. This volatile compound is then decomposed on a tungsten filament at a higher temperature to obtain the pure metal: $TiI_4 \xrightarrow{1700 \ K} Ti + 2I_2 	ext{ (Pure metal)}$.

Column $-I$	Column $-II$
$(i)$ Iron and copper	$(P)$ Poling
$(ii)$ Zirconium and Titanium	$(Q)$ Bessemerisation
$(iii)$ Lead and Tin	$(R)$ Van Arkel
$(iv)$ Copper and Tin	$(S)$ Liquation

The Van Arkel method for the purification of metals involves converting the metal into a:

Similar Questions

The solubilities of the impurities in the melt and solid states are not the same. This principle is applied during the extraction of boron. This method is known as:

Match Column $-I$ with Column $-II$ and select the correct answer using the codes given below.

Column $-I$ Column $-II$

$(i)$ Iron and copper $(P)$ Poling

$(ii)$ Zirconium and Titanium $(Q)$ Bessemerisation

$(iii)$ Lead and Tin $(R)$ Van Arkel

$(iv)$ Copper and Tin $(S)$ Liquation

Which method is used for refining $Zr$ and $Ti$? Explain with equations.

The method of zone refining of metals is based on the principle of

Write the chemical equations for the Mond process used for the refining of nickel.

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