Question

Iodine crystals kept in closed glass chamber, after sometime glass chamber becomes violet, this phenomenon is called as___​

Answer 1

Answer:

12th

Chemistry

The d-and f-Block Elements

Some Important Compounds of Transition Elements

What do you observe when:(i...

CHEMISTRY

Asked on December 26, 2019 byJoshua Vakharia

What do you observe when:

(i) Iodine crystals are heated in a test tube?

(ii) Iron nails are added to copper sulphate solution?

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ANSWER

(i) When Iodine crystals are heated, the van der Waals forces are easily overcome and the molecule breaks into the gas phase. They sublime and form a purple colored dense vapor.

(ii) When Iron nail (Ferrum) is dipped in Copper sulphate (CuSO4) there takes reaction between them and copper sulphate changes its color from blue to light green. This shows Iron is more reactive than Copper, it can replace Copper from CuSO4.