Question

Iodine stains on clothes can be removed by

• A. NaCl
• B. NaBr
• C. KI
• D. $Na_2S_2O_3$

Answer 1

Answer: (D)

$Na_2S_2O_3$

Answer 2

${2Na_2S_2O_3 + I_2 -> Na_2S_4 O_6 + 2NaI}$