Answer:
[H+] = 1 x 10⁻¹³ M and it is a base.
Step-by-step explanation:
Remember that if pH is less than 7 is an acid, if pH is greater than 7 is a base, and if pH = 7 is neutral; so in this case, we have a base because our pH = 13 is greater than 7.
Now, to calculate the hydrogen ion concentration H+, we have to apply the following formula:
![[H^+]=10^(-pH).](https://img.qammunity.org/2023/formulas/chemistry/high-school/e329i11j96gsj3thpc8i8cncy1e053do52.png)
So we just have to replace the value of pH, like this:
![\begin{gathered} [H{}^+]=10^(-13), \\ \\ [H^+]=1\cdot10^(-13)\text{ M.} \end{gathered}](https://img.qammunity.org/2023/formulas/chemistry/high-school/5t2urx2pod7pwttmdjj7ki9ddywld9ztfi.png)
The answer would be [H+] = 1 x 10⁻¹³ M and it is a base.