pH

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Diana Andrade_4F
Posts: 50
Joined: Tue Nov 05, 2019 12:18 am

pH

Postby Diana Andrade_4F » Thu Jan 16, 2020 10:20 pm

Why doesn't pH have units?
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Chem_Mod
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Re: pH

Postby Chem_Mod » Thu Jan 16, 2020 10:45 pm

pH is a measure of acidity/basicity. Although you substitute molarity into the equation, it is unitless because it does not refer to a quantity, ie 1 liter of a solution with pH 8 is not more basic than 5 liters of a solution with pH 8. Moreover, it involves logarithms, which do not have units.
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MinuChoi
Posts: 100
Joined: Wed Sep 18, 2019 12:15 am

Re: pH

Postby MinuChoi » Fri Jan 17, 2020 3:36 pm

pH is a scale. It's logarithmic, so a linear increase in pH is not a linear increase in [H+].
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