Question

Calculate the [H3O+] of the following solutions: ph = 11.8

Answer 1

The [H3O+] is 1.58x10-12 M.

Step-by-step explanation:

To calculate the [H3O+] from the pH, we can use the pH formula and replace the value of pH:

`\begin{gathered} pH=-log{}\lbrack H_3O^+\rbrack \\ 11.8=-log\lbrack H_3O^+\rbrack \\ 10^((-11.8))=\lbrack H_3O^+\rbrack \\ 1.58*10^(-12)=\lbrack H_3O^+\rbrack \end{gathered}`

So, the [H3O+] is 1.58x10-12 M.