Chemistry
(a) Some metallic oxides can be reduced by hydrogen, carbon, carbon monoxide and some cannot. Explain.
(b) Write balanced equation for the reduction of copper (II) oxide by hydrogen.
Related Questions
Compare roasting and calcination.
(a) Name an ore of zinc
(b) Which process is applied to concentrate it?
(c) How is concentrated ore changed to oxide?
How are the following metallic oxides reduced. Write equations :
(a) Iron (II) oxide
(b) Zinc oxide
State why aluminium is extracted from it's oxide by electrolysis while copper, lead, iron by reducing agents and mercury and silver by thermal decomposition.