P-Block Elements Ques 99
Question: Colour of iodine solution is disappeared by shaking it with aqueous solution of
[CPMT 1979, 81; MP PET/PMT 1988; MP PMT 1986; RPMT 1997, 2002]
Options:
A) $ H_2SO_4 $
B) $ Na_2S $
C) $ Na_2S_2O_3 $
D) $ Na_2SO_4 $
Show Answer
Answer:
Correct Answer: C
Solution:
$ 2Na_2S_2O_3+I_2\to 2NaI+Na_2S_4O_6 $