Medium
Explain the Van Arkel method with an example.
(N/A) The Van Arkel method is very useful for removing all oxygen and nitrogen present as impurities in certain metals like $Zr$ and $Ti$.
The crude metal is heated in an evacuated vessel with iodine. The metal iodide,being more covalent,volatilizes.
$Zr + 2I_2 \rightarrow ZrI_4$
The metal iodide is decomposed on a tungsten filament electrically heated to about $1800 \ K$. Thus,the pure metal is deposited on the filament.
$ZrI_4 \rightarrow Zr + 2I_2$
The crude metal is heated in an evacuated vessel with iodine. The metal iodide,being more covalent,volatilizes.
$Zr + 2I_2 \rightarrow ZrI_4$
The metal iodide is decomposed on a tungsten filament electrically heated to about $1800 \ K$. Thus,the pure metal is deposited on the filament.
$ZrI_4 \rightarrow Zr + 2I_2$
Explore More
Similar Questions
Which process is used for the refining of iron?
Easy
View SolutionDescribe a method for refining nickel.
Medium
View SolutionWhich of the following metals is refined by vapour phase refining in the Mond process?
Which method of purification is represented by the following equation?
$Ti_{(s)} + 2I_{2(g)}$ $\xrightarrow{523 \ K} TiI_{4(g)}$ $\xrightarrow{1700 \ K} Ti_{(s)} + 2I_{2(g)}$
$Ti_{(s)} + 2I_{2(g)}$ $\xrightarrow{523 \ K} TiI_{4(g)}$ $\xrightarrow{1700 \ K} Ti_{(s)} + 2I_{2(g)}$
Write the chemical equations for the $Van$ $Arkel$ method used for the refining of $Zr$ and $Ti$.
Easy
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo