Question
Identify the oxidising agent, reducing agent and the substance undergoing oxidation and reduction in the following reactions:

Solution
a)
(i) Oxidising agent H2SO4
(ii) Reducing agent HBr
(iii) Substance oxidised HBr
(iv) Substance reduced H2SO4
b)


(i) Oxidising agent CuO
(ii) Reducing agent NH3
(iii) Substance oxidised NH3
(iv) Substance reduced CuO.