pH values
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Meg helped Chels study for her chemistry test by reminding her of the important pH and pOH formulas. The first formula is pH + pOH = 14, which allows calculating one value if the other is known. The second formula is pH = -log[H+], which defines pH as the negative logarithm of the hydrogen ion concentration in acid solutions. The corresponding formula for pOH is pOH = -log[OH-], which defines pOH as the negative logarithm of the hydroxide ion concentration in alkali solutions. Chels thanked Meg for helping her review the key formulas before her important chemistry test.
![Geez, thanks a lot Meg! Now
I'm definitely ready for the
test tomorrow :D
That's right! Don't forget,
pH + pOH = 14
If you only have the pOH value,
you can easily find the pH of the
solution by
pH = 14 - pOH.
Tomorrow’s the
big day, Chels! You
ready for the test?
how to calculate ph value?
Wait, I forgot!
What's the formula
to calculate the pH?
It's pH = - log [H+}
where [H+} is the
concentration of
hydrogen ions, H+ in
an acid solution.
Woah, thanks!
So it's the same for pOH
value too, right?
pOH = - log [OH+] where
[OH+] is the concentration of
hydroxide ions, OH- in an
alkali solution.
@estherannerandyy](https://image.slidesharecdn.com/phvalues-210625094209/85/pH-values-1-320.jpg)
pH values
- 1. Geez, thanks a lot Meg! Now I'm definitely ready for the test tomorrow :D That's right! Don't forget, pH + pOH = 14 If you only have the pOH value, you can easily find the pH of the solution by pH = 14 - pOH. Tomorrow’s the big day, Chels! You ready for the test? how to calculate ph value? Wait, I forgot! What's the formula to calculate the pH? It's pH = - log [H+} where [H+} is the concentration of hydrogen ions, H+ in an acid solution. Woah, thanks! So it's the same for pOH value too, right? pOH = - log [OH+] where [OH+] is the concentration of hydroxide ions, OH- in an alkali solution. @estherannerandyy