Q5Multiple choice
Thiosulphate reacts differently with iodine and bromine in the reactions given below: 2– 2– – 2S2O3 + I2 → S4O6 + 2I 2– 2– – + S2O3 + 2Br2 + 5H2O → 2SO4 + 2Br + 10 H Which of the following statements justifies the above dual behaviour of thiosulphate?
- (i)Bromine is a stronger oxidant than iodine.
- (ii)Bromine is a weaker oxidant than iodine.
- (iii)Thiosulphate undergoes oxidation by bromine and reduction by iodine in these reactions.
- (iv)Bromine undergoes oxidation and iodine undergoes reduction in these reactions.
Show answer
(i) Bromine is a stronger oxidant than iodine.