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Iodine reacts with $Na_2S_2O_3$ (aq) to give products which are

(a) pale yellow coloured
(b) dark blue coloured
(c) violet coloured
(d) colourless

1 Answer

Answer: colourless
$I_2 + Na_2S_2O_3$ (sodium thiosulphate) $ \longrightarrow Na_2S_4O_6 $ (sodium tetrathionale) $ + NaI$
In this reaction, both the products of the reaction are colourless.
answered Feb 1, 2014 by mosymeow_1

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