Acidicity of KMnO4

[Mantas]

How could I estimate the pH of KMnO4 solution (strong oxidizer)? I believe it is neutral, but is that because it takes part in redox reactions and not acid/base or another reason?

 

[Borek]

Hint: it is a salt of a strong base and strong acid (HMnO4).

 

[Mantas]

Do you have the Ka value for Permanganic Acid? I'm about 500 miles removed from my CRC. Permanganic acid and the MnO4- salts are not on any of my reference materials as being a strong/weak anything. I do know that MnO4- is a great oxidizer though.

 

[Borek]

pKa = -0.3 (for ionic strength 1.0).

 

[kalery]

it's a highly oxidized salt

 

[Borek]

Which doesn't change its pH.



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