JEE Advance - Chemistry (2008 - Paper 1 Offline - No. 4)
Aqueous solutions of Na$$_2$$S$$_2$$O$$_3$$ on reaction with Cl$$_2$$ gives:
Na$$_2$$S$$_4$$O$$_6$$
NaHSO$$_4$$
NaCl
NaOH
Explanation
The product formed the reaction is used for chlorination of water bodies. The compound Na$$_2$$S$$_2$$O$$_3$$ gets oxidised by chlorine to form NaHSO$$_3$$. The balanced chemical reaction is,
Na$$_2$$S$$_2$$O$$_3$$ + 4Cl$$_2$$ + 5H$$_2$$O $$\to$$ 2NaHSO$$_4$$ + 8HCl
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