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Q: Why Potassium permanganate is used as secondary standardhttpwwwanswerscomQWhy Potassium permanganate is used as secondary standard?
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Why is potassium permanganate not used as a primary standard?

because it easily ionises itself.


Why is potassium permanganate used in titration experiment despite being a secondary standard solution?

kmno4 is very good oxidizing agent. that means it is easily reduced by any other reagent. so it can't be considered as primary standard as its concentration changes upon free leaving


Why kmno4 is a secondary standard?

Potassium permanganate solutions due to the strong oxiding nature readily forms MnO2 on contact with impurities. Traditionally sources of KMnO4 always contained traces of MnO2 . KMnO4 solutions "go off" when they stand for a period.


How do you make standard Mn solution?

Dissolve a known amount of potassium permanganate in a known volume of demineralized water; calculate the concentration of manganese in the solution.


Why is permanganate not a primary standard?

aqueous solutions are not stable for long


How do you prepare standard solution of potassium dichromate to compare icteric index of serum?

for preparing 0.1 normal solution of potassium permanganate you have to disssolve 3.16 g potssium permangnate in 1L water bt in alkaline or neutral medium reactions of potassium permanganate is different and Mn gains 3 electrons in redox reaction,so far alkaline medium redox titration equivalent wt of KMnO4 will be 158\3=52.6.so far,0.1 N KMnO4 in alkaline medium redox titration dissolve 5.26 g in 1L sol.


What is the group number in standard and roman numerals of potassium?

the group number in standard and roman numerals of potassium is as follows .the group number in standard of potassium is Group 1 .the group number roman numerals of potassium is Group I.


Which other primary standard can be used to standardize sodium hydroxide other than KHP?

sodium hydroxide is a secondary standard because it absorb the moisture from the air and its concentration will change


WHAT IS THE STANDARD HEAT FORMATION OF POTASSIUM HYDROXIDE (S)?

The standard enthalpy of formation for potassium hydroxide is -425,8 kJ/mol.


What is potassium's normal phase?

At standard temperature and pressure, potassium is a solid.


What is secondary standard apparatus What are secondary apparatus?

one is specific


Is hcl praimary standard or secondary standard?

HCl is not used as a primary standard