What is [H+] if pH=4.18?

1 Answer
anor277
Jul 20, 2017

[H+]=10−4.18⋅mol⋅L−1

Explanation:

By definition, pH=−log10[H+]; equivalently, pH=−log10[H3O+].

We take antilogs..........

[H3O+]=10−4.18⋅mol⋅L−1=6.61×10−5⋅mol⋅L−1.

See https://socratic.org/questions/does-flat-coke-go-ph-neutral for background......and also [here.](https://socratic.org/questions/what-is-the-ph-of-a-1-00-x-10-4-m-solution-of-lithium-hydroxide-solution#306871)

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