In the above reaction the oxidation number of Br2
increases from zero (in Br2
) to +1 (in HOBr) and
decreases from zero (in Br2
) to –1 (in HBr). Thus Br2
is oxidised as well as reduced and hence it is a redox
reaction.
3
AIPMT 2003
MCQ (Single Correct Answer)
The oxidation states of sulphur in the anions
SO3$${_3^{2 - }}$$, S2O$${_4^{2 - }}$$ and S2O$${_6^{2 - }}$$ follow the order