For the reaction Sb₂S₃ + 6HCl → 2SbCl₃ + 3H₂S, which species undergoes reduction?
Reduction is electron gain. Sb (+3 in Sb₂S₃) remains +3 in SbCl₃, but S (-2 to -2) doesn’t change; no reduction occurs here—it’s not redox.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality