Aqueous solution of S_2O_3^ 2- is converted to _____ in presence of iodine. [OJEE 2005]

JEE Main Chemistry question

Aqueous solution of is converted to in presence of iodine. [OJEE 2005]

Answer: (A)

Iodine oxidises the thiosulphate ion to the tetrathionate ion while itself being reduced to iodide: . The products are not sulphate or

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Question ID VK-137550