Which compound decolorizes iodine solution? | Chemistry | SolveeIt

Question

Which compound decolorizes iodine solution?

$H _{2} SO _{4}$

$N a_{2} S$

$Na _{2} SO _{4}$

$Na _{2} S _{2} O _{3}$

Answer

$Na _{2} S _{2} O _{3}$

Explanation

Solution

Hypo $\left( Na _{2} S _{2} O _{3}\right)$ decolourises iodine solution. $2 Na _{2} S _{2} O _{3}+ I _{2} \longrightarrow 2 NaI + \underset{\text{Sodium tetra thionate}}{Na _{2} S _{4} O _{6}}$

Chemistry Question on Group 17 Elements

Solution