Use Na = 23, S = 32, O = 16. Iodine oxidises thiosulfate to tetrathionate: 2S2O3^2- + I2 -> S4O6^2- + 2I-. The equivalent mass of Na2S2O3 in this reaction is:

NEET levelSingle correct optionDifficulty 1 of 3rx119

Use Na = 23, S = 32, O = 16. Iodine oxidises thiosulfate to tetrathionate: $2 S X_{2} O X_{3} X^{2 -} + I X_{2} S X_{4} O X_{6} X^{2 -} + 2 I X^{-}$ . The equivalent mass of $Na X_{2} S X_{2} O X_{3}$ in this reaction is:

Two thiosulfate ions together lose 2 electrons, so each loses 1:

n = 1

. Equivalent mass

= M = 46 + 64 + 48 = 158