Question

If `pH=7`, what are `[H_3O^+]`, and `[HO^-]`?

Answer 1

`[H_3O^+]=10^-7*mol*L^-1`.

Explanation:

By definition, `pH=-log_10[H_3O^+]`.

And so if `pH=7`, then `[H_3O^+]=10^-7*mol*L^-1`.

See [this site](https://socratic.org/questions/what-is-the-ph-of-a-1-00-x-10-4-m-solution-of-lithium-hydroxide-solution`306871) for another treatment of`pH`, and`pOH#.

What is `[HO^-]` in the given solution?