Teaching RPSC School Lecturer Mock Test Series 2024 Chemistry Redox Reactions Oxidation And Reduction Reactions
Thiosulphate reacts differently with iodine and bromine in the reactions given below:
2\(\rm S_2O^{2-}_3\) + I2 → \(\rm S_4O^{2-}_6\) + 2I–
\(\rm S_2O^{2-}_3\) + 2Br2 + 5H2O → \(\rm 2SO^{2-}_4\) + 2Br– + 10 H+
Which of the following statements justifies the above dual behaviour of thiosulphate?
1
Bromine is a stronger oxidant than iodine.
2
Bromine is a weaker oxidant than iodine.
3
Thiosulphate undergoes oxidation by bromine and reduction by iodine in these reactions.
4
Bromine undergoes oxidation and iodine undergoes reduction in these reactions.
5
Question Not Attempted