Advertisements
Advertisements
Question
Name the anode, the cathode and the electrolyte used in the electrolytic refining of impure copper.
Solution
A large block of impure metal (copper) is made the anode and a thin strip of pure metal (copper) is made the cathode. An acidified solution of copper sulphate (CuSO4) is taken as the electrolyte.
APPEARS IN
RELATED QUESTIONS
Name a reducing agent that may be used to obtain manganese from manganese dioxide.
Why does aluminium not corrode right through?
Explain giving one example, how highly reactive metals (which are high up in the reactivity series) are extracted.
Name three other metals which are extracted in a manner similar to sodium.
Describe the extraction of zinc metal from its sulphide ore (zinc blende). Write equations of the reactions involved.
A metal which exists as a liquid at room temperature is obtained by heating its sulphide ore in the presence of air.
(a) Name the metal and write its chemical symbol.
(b) Write the name and formula of the sulphide ore.
(c) Give the equations of chemical reactions involved in the production of metal from its sulphide ore.
(d) Name a common device in which this metal is used.
(e) Can this metal displace copper from copper sulphate solution? Why?
Define the term : Gangue
What is meant by concentration of ores?
Aluminium oxide is _______ oxide.
Two ores A and B were taken. On heating ore A gives CO2 whereas, ore B gives SO2. What steps will you take to convert them into metals?
