van-Arkel method of purification of metals involves converting the met

1.	van-Arkel method of purification of metals involves converting the metals to a(a) volatile stable compound(b) non-volatile stable compound(c) volatile unstable compound(d) None of the above
Answer» Answer is : (a) volatile stable compound Ultra pure metals, are prepared by the van-Arkel method. Arkel method is used to purify oxide of titanium metal. Ti is heated with iodine to about 500 K to form volatile compound. The \(Til_4\) is reheated at 1700 K, when it decomposes to give pure Ti. \(Ti+2l_2\overset{500 k}{\rightarrow} \underset{\text{Volatile stable compound}}{Til_4}\) \(\overset{1700 k}{\rightarrow} \underset{\text{Pure metal}}{Ti}+2l_2\)

van-Arkel method of purification of metals involves converting the metals to a(a) volatile stable compound(b) non-volatile stable compound(c) volatile unstable compound(d) None of the above

Answer»

Answer is : (a) volatile stable compound

Ultra pure metals, are prepared by the van-Arkel method. Arkel method is used to purify oxide of titanium metal. Ti is heated with iodine to about 500 K to form volatile compound. The \(Til_4\) is reheated at 1700 K, when it decomposes to give pure Ti.

\(Ti+2l_2\overset{500 k}{\rightarrow} \underset{\text{Volatile stable compound}}{Til_4}\) \(\overset{1700 k}{\rightarrow} \underset{\text{Pure metal}}{Ti}+2l_2\)

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van-Arkel method of purification of metals involves converting the metals to a(a) volatile stable compound(b) non-volatile stable compound(c) volatile unstable compound(d) None of the above

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