During the titration of sodium thiosulphate and iodien, the following – InterviewSolution

1.	During the titration of sodium thiosulphate and iodien, the following reaction takesplace : 2Na_2 S_2O_3 + I_2 to Na_2 S_4 O_6 + 2NaI Which of the following statement is correct ?
Answer» SODIUM thiosuphate gets oxidised because OXIDATION number of S in it INCREASES from+ 2 to + 4. Oxidation number of S increases by 0.5 while that iodine decreases by -1. Iodine behaves as reducing agent because its oxidation number inreases. The product `Na_2S_4O_6` is sodium hexathionate and oxidation number of S in it is 2.5. Answer :B

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