Home
Class 12
CHEMISTRY
Out of the following the one which is no...

Out of the following the one which is not a primary standard is

A

`K_(2)Cr_(2)O_(7)`

B

`KMnO_(4)`

C

Oxalic acid

D

Ceric sulphate

Text Solution

Verified by Experts

The correct Answer is:
B
`KMnO_(4)` is not suitable to be used as primary standards because :
(i) It can not be obtained in very pure form
(ii) It readily reacts with any traces of organic material or any other reducing substance in water.
(iii) It decompose in presence of sunlight.
Promotional Banner

Similar Questions

Explore conceptually related problems

Out of the following which one is not true?

Which of the following is not primary standard?

For standardizing NaOH solution, which of the following is used as a primary standard ?

All of the following can be used as primary standards in acid-base titration except :

Which one of the following is not a primary amine ?

The data collected from which one of the following methods is not a primary data ?