Question

The human blood plasma has H+ concentration of 0.000000025 moles per liter.express this as pH value?

Answer 1

To have a pH value, you have to log the concentration of `H^+` ions.

`pH = -log(2.5*10^-8)`
`pH = 7.60`

To revert the pH to `[H^+(aq)]`, you antilog the pH value.

pH = 7.60

`[H^+] = 10^(-7.60)`
`[H^+] = 2.5*10^-8`