Wrought iron is the purest form of iron. Write a reaction used for the preparation of wrought iron from cast iron. How can the impurities of sulphur, silicon and phosphorus be removed from cast iron?
(a) X is Fe2O3 i.e., Iron (III) Oxide
(b) The reaction involved is thermite reaction or aluminothermy.
(c) Fe2O3(s) + 2Al(s)→ Al2O3 (s) + 2Fe(s) + Heat
Ferric oxide Aluminium Aluminium Iron Oxide.
Chemical formula -CaOCl2
Chemical equation -
Ca(OH)2+Cl2 →CaOCl2+H2O
Uses:
(i) For bleaching cotton and linen in the textile industry
(ii) As an oxidising agent in a chemical industry.
(iii) For disinfecting water.
(i), (iv)
(i) Cast iron is obtained by remelting pig iron with scrap iron and coke using hot air blast.
(iv) Zr and Ti are purified by van Arkel method.