Analytical Chemistry Question 284
Question: The primary standard solution for estimation of $ Na_2S_2O_3 $ is
[Orissa JEE 2005]
Options:
A) $ I_2 $ solution
B) $ KMnO_4 $
C) $ K_2Cr_2O_7 $
D) Oxalic acid
Show Answer
Answer:
Correct Answer: A
Solution:
Standard solution of $ I_2 $ is used to estimate sulphite, thiosulphite, arsenite etc.