Zinc + _______ → Zinc oxide + Hydrogen.
Cold water
Hot water
Steam
Chlorine gas.
Zinc is a metal with medium reactivity it reacts with steam to give zinc oxide and hydrogen gas
Zinc + _______ → Zinc oxide.
Zinc oxide is reduced to Metallic Zinc by:
Zinc blende ore can be converted into zinc oxide by the process of: (a) roasting (b) hydrogenation (c) chlorination (d) calcination
Describe giving all practical details, how would you prepare :
(a) copper sulphate crystals from a mixture of charcoal and black copper oxide,
(b) zinc sulphate crystals from zinc dust (powdered zinc and zinc oxide),
(c) sodium hydrogen carbonate crystals.
(d) Calcium sulphate from calcium carbonate.