Which substance is the reducing agent in this reaction?

Question

Which substance is the reducing agent in this reaction?

 

2Cr(OH)₃+3OCl⁻+4OH⁻→2CrO₄⁻²+3Cl⁻+5H₂O

Express your answer as a chemical formula.

Answer 1

A reducing agent is one that loses electrons and itself becomes oxidized.

2Cr(OH)3+3OCl−+4OH−→2CrO4−2+3Cl−+5H2O

Cr on the left has ox.no. of +3 and on the right it is +6, so it has been oxidized and is the reducing agent.

Cr^3+ ==>Cr^6+ + 3e-