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.