Estimate pH of KMnO4: Is It Neutral?

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The pH of a potassium permanganate (KMnO4) solution is effectively neutral due to its composition as a salt derived from a strong base (KOH) and a strong acid (HMnO4). The discussion highlights that KMnO4 does not significantly alter the pH of the solution, primarily because it participates in redox reactions rather than acid-base reactions. The pKa value of permanganic acid is noted as -0.3 at ionic strength 1.0, indicating its strong acidic nature, yet this does not affect the pH of the KMnO4 solution.

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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?
 
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Hint: it is a salt of a strong base and strong acid (HMnO4).
 
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.
 
pKa = -0.3 (for ionic strength 1.0).
 
it's a highly oxidized salt
 

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