Chemistry
During purification of copper – State:
(i) The anode used
(ii) The electrolyte used.
Write the equation taking place at the anode in the above.
Related Questions
Write equations for the reactions taking place at the two electrodes during the electrolysis of:
(i) Acidified CuSO4 solution with copper electrodes.
(ii) Molten PbBr2 with inert electrodes. (mention clearly the name of the electrode in each case)
Give scientific reasons :
(i) During electrolysis of molten lead bromide, graphite anode is preferred to other electrodes.
(ii) Electrical conductivity of acetic acid is less in comparison to that of dil. H2SO4 – at a given concentration.
(iii) Electrolysis of molten lead bromide is considered to be a redox reaction.
Differentiate between the terms strong electrolyte and weak electrolyte. (stating any two differences)
The particles present in strong electrolytes are:
Select the correct answer from A, B, C and D:
A: only molecules
B: mainly ions
C: ions and molecules
D: only atoms