How to Estimate the pH of a Solution – Part 1

pH is a logarithmic scale used to specify the acidity or basicity of aqueous solutions.


Acidic solutions (with higher concentrations of hydrogen (H+) cations) are measured to have lower pH values than basic or alkaline solutions. The neutral pH is 7. A 𝑝𝐻 meter may be used for a precise and accurate measurement of the 𝑝𝐻 of a solution.

Question:

What is the pH of a 10─8 M solution of HCl?

Solution:



Click/tap to enlarge the image

For a dilute solution, the [H+] from water cannot be ignored.

NOTE: Post updated since published

Pivotal pH❓ Let Chemaficionado know in the comments below or at mychemistryhomework@gmail.com❗

References:

(1)    Wikipedia Contributors. pH. Wikipedia. https://en.wikipedia.org/wiki/PH.

(2)  Brown, C.; Ford, M. Higher Level Chemistry, 2nd ed.; Pearson Education: Harlow, Essex, 2014.

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