How do we work out #[H_3O^+]# from #pH#?

1 Answer
anor277
Jan 17, 2017

Clearly, you are working out the hydronium ion concentration in a solution, where.......

Explanation:

#[H_3O^+]=10^(-pH)#.

Back in the day, we had to use logarithmic tables, and take the antilogarithm. These days, given a calculator, put in the #pH# value, hit the #"+/-"# button to make this value negative, and then hit the button #10^x#, to give #10^(-pH)#.

Most calculators have the #log# button on a shift with #10^x#. Anyway, if I have not answered your question, someone will try again.

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