Differentiate between electrical conductivity of copper sulphate solution and copper metal.
During electrical conductivity of copper sulphate solution, the CuSO4 splits into Cu2+ and SO2-4 ions. Whereas, copper metal only conducts electricity but does not undergo any change.
Answer the following question:
Write the chemical formulae of one main one of iron and aluminium.
Write the balanced chemical equation for each of the following reaction:
Sodium thiosulphate is reacted with dilute hydrochloric acid.
Given a reason as to why?
The electrolysis of acidulated water is considered to be an example of catalysis.
What would you observe in the following case?
When carbon monoxide is passed over heated copper oxide.
Answer the following question:
Name a metal which is found abundantly in the earth’s crust.
During the electrolysis of copper (II) sulphate solution using platinum as cathode and carbon as anode:
i) What do you observe at the cathode and at the anode?
(ii) what change is noticed in the electrolyte?
(iii) write the reaction at the cathode and at the anode?
Answer the following question:
Write the constituents of electrolyte for the extraction of aluminium