Van Arkel method of purification of metals involves converting the metal to a volatile stable compound.

For example, $N i$ is heated with $C O$ to form volatile $N i (C O)_{4}$

$N i + 4 C O 330 - 350 K - ------ \to N i (C O)_{4}$ .

Question

Van Arkel method of purification of metals involves converting the metal to a-volatile unstable compoundvolatile stable compoundnon-volatile stable compoundNone of the above

Toppr Admin · Accepted Answer

Van Arkel method of purification of metals involves converting the metal to a volatile stable compound.

For example, $N i$ is heated with $C O$ to form volatile $N i (C O)_{4}$

$N i + 4 C O 330 - 350 K - ------ \to N i (C O)_{4}$ .

	Column I		Column II
(A)	Impure metal to volatile complex	(i)	Blistered copper
(B)	$2 C u O + C u_{2} S \to 4 C u + S O_{2}$	(ii)	Mond process
(C)	Purification of mercury	(iii)	Van Arkel process
(D)	Purification of zirconium	(iv)	Liquation

Van Arkel method of purification of metals involves converting the metal to a:volatile unstable compoundvolatile stable compoundnon-volatile stable compoundNone of the above

Van Arkel method of purification of metals involves converting the metal to a volatile stable compound.For example, Ni is heated with CO to form volatile Ni(CO)4Ni+4CO330−350K−−−−−−−→Ni(CO)4.

Van Arkel method of purification of metals involves converting the metal to a:
volatile unstable compound
volatile stable compound
non-volatile stable compound
None of the above

Van Arkel method of purification of metals involves converting the metal to a volatile stable compound.

For example, $N i$ is heated with $C O$ to form volatile $N i (C O)_{4}$

$N i + 4 C O 330 - 350 K - ------ \to N i (C O)_{4}$ .