Question

What would happen when a small quantity of H2O2 is added to a solution of FeSO4 ?

• A. Colour of FeSO4 disappears.
• B. H2 is evolved.
• C. An electron is added to Fe2+.
• D. An electron is lost by Fe2+.

Answer 1

Answer: (D)

An electron is lost by Fe2+.

Answer 2

Fe2+ ion oxidises to Fe3+ ion by H2O2

2Fe2+ + H2O2 + 2H+$\longrightarrow$2Fe3+ + 2H2O