pH of combined chemicals

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Jricer3
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pH of combined chemicals

Post by Jricer3 »

I’m struggling figuring out how the water in this affects the pH levels. Can someone please explain the effects. Also what would be the expected total pH?

KMnO₄ 114 grams +
NaOH 360 grams +
H2O 1 gallon
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ChenBeier
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Re: pH of combined chemicals

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1 gal = 3,78 l
360 g NaOH/3.78 l = 95,23 g/ l = 2,3 mol/l
pH = 14,36 what means high alcaline solution.
Permanganate has no influence.
Jricer3
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Re: pH of combined chemicals

Post by Jricer3 »

I thought pH of sodium hydroxide was 14 at most. How does it go up in 1 gallon of water? And potassium perm at a pH of 7 does effect the solution?
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ChenBeier
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Re: pH of combined chemicals

Post by ChenBeier »

pH is defind as negative logarithm of activity of hydrogen ions.
The pOH is the same of hydroxide ions.

pH of NaOH is 14 if the Concentration is 1 mol/l

You have 2,3 mol/ l so it's higher,

As I wrote Permanganate has no influence of pH.
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