1 Basic Concepts of Chemistry
20 mL solution of 0.1 M ferrous sulphate was completely oxidised using a suitable oxidising agent. What is the number of electrons exchanged?
1) 1.204 x 1022 2) 193 3) 1930 4) 1.204 x 1021
Solution
During oxidation of FeSO4, Fe2+ ion is oxidises into Fe3+
Fe2+ → Fe3+ + e-
i.e., 1e- is transferred from FeSO4 , i.e., from 1 molecule of Fe2+ ion.
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