Purification And Characterisation Of Organic Compounds Question 160
Question: Which of the following pairs of metals is purified by van Arkel method-
Options:
A) Ga and in
B) Zr and Ti
C) Ag and Au
D) Ni and Fe
Show Answer
Answer:
Correct Answer: B
Solution:
[b] Zr and Ti are purified by van Arkel method.
$ Zr(s)+2I_2(g)\xrightarrow{870K}ZrI_4(g) $
$ ZrI_4(g)\xrightarrow[Tugstenfilament]{2075K}Zr(s)+2I_2(g) $
$ Ti(s)+2I_2(s)\xrightarrow{523K}TiI_4(g) $
$ TiI_4\xrightarrow{1700K}\underset{Puretitanium}{\mathop{Ti(s)}}+2I_2(g) $
BETA
