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Q.

In van Arkel method, if I2 is introduced at 1800 K over impure zirconium metal, the product will be:

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a

iodide of the metal

b

pure metal

c

impurities react with iodine

d

none of these

answer is D.

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Detailed Solution

Zr (impure)+2I2→<1800 KZrI4;ZrI4→>1800KZr(pure)+2I2 and hence over 1800 K practically no reaction can take place between Zr and I2.Therefore, (4) option is correct.
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