$\mathrm{Na}_2 \mathrm{~S}_2 \mathrm{O}_3+\mathrm{I}_2 \longrightarrow$ Product is

• A

  $\mathrm{Na}_2 \mathrm{~S}$
• B

  $\mathrm{Na}_2 \mathrm{SO}_4$
• Correct answer
  C

  $\mathrm{Na}_2 \mathrm{~S}_4 \mathrm{O}_6$
• D

  $\mathrm{S}_2$

Solution

The product of sodium thiosulphate and iodine is sodium tetra thionate.

Hence, the correct answer is option: 'C'.