Explainthefollowing : (a) COisa betterreducingagentbelow 983 KwhereasC isabetterreducingagentabove 983 K (b)Generallysulphide oresareconvertedinto oxidesbeforereduction (c )Silicaisaddedtothesulphideoreofcopper in the reverberatoryfurnace (d) Carbonandhydrogenare notusedasreucingagentsathigh temperatures. (e) Vapourphaserefining methodis usedforthe purificationof Ti.

Explainthefollowing : (a) COisa betterreducingagentbelow 983 KwhereasC

1.	Explainthefollowing : (a) COisa betterreducingagentbelow 983 KwhereasC isabetterreducingagentabove 983 K (b)Generallysulphide oresareconvertedinto oxidesbeforereduction (c )Silicaisaddedtothesulphideoreofcopper in the reverberatoryfurnace (d) Carbonandhydrogenare notusedasreucingagentsathigh temperatures. (e) Vapourphaserefining methodis usedforthe purificationof Ti.
Answer» Solution :(C ) Sulphideoreofcoppercontains ironas impurity. Silicaisaddedto removethisimpurity as ironsilicate(slag). ` "" UNDERSET ("Impurity")(FeO) +SiO_2tounderset ("Ironsilicate (slag)")(FeSiO_3) ` (d) Thereasonbeingthatcarboandhydrogenreactwithmetalsat hightemperatureformingtheircarbidesandhybridesrespectively. (e) Ti reactswith iodineat523 Ktoformvolatile` TiI_4 `whichdecomposesat high TEMPERATURE(1700 K ) toformpuretitanium.