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
(a) Name an ore of zinc
(b) Which process is applied to concentrate it?
(c) How is concentrated ore changed to oxide?
Give equations for the reduction of :
(a) Iron (II) oxide
(b) Iron (III) oxide
(c) Lead (II) oxide
(d) Zinc oxide
An ore on being heated in air forms sulphurous anhydride. Write the process used for the concentration of this ore.
The following flow chart shows the process of extraction of zinc. Out of the 5 steps, 2 steps are incorrect. Identify and correct them.
