General Principles and processes of Isolation of Elements
easy

किस धातु युग्म का शुद्धीकरण वैन आर्कल विधि द्वारा किया जाता है?

A

$Ga$ तथा $In$

B

$Zr$ तथा $Ti$

C

$Ag$ तथा $Au$

D

$Ni$ तथा $Fe$

(AIPMT-2011)

Solution

$\mathrm{Zr}$ and Ti are purified by van-Arkel method. $\underset{\text {Impure}}{Z r+2 I_{2}} \stackrel{600\,^{o} C}{\longrightarrow} Z r I_4 \stackrel{1800\,^{o} C}{\longrightarrow} \underset{\text {pure}}{Z r+2 I_{2}}$

This method is useful for removing all the oxygen and nitrogen present in the form of impurity in certain metals like $Zr$ and $Ti.$

Standard 12
Chemistry

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