S Block Elements Question 30

Question: The reaction of $ Na_2S_2O_3 $ with iodine gives

[CPMT 1971, 80, 81; DPMT 1983, 90; MP PMT 1985; EAMCET 1990; BHU 1980]

Options:

A) Sodium sulphide

B) Sodium sulphite

C) Sodium sulphate

D) Sodium tetrathionate

Show Answer

Answer:

Correct Answer: D

Solution:

$ 2Na_2S_2O_3+I_2\to Na_2S_4O_8+2NaI $ .