Question

What is the pH of a 8.7 x 10^-12 M OH- solution ? pH= ?

Answer 1

pH=14-pOH

pOH=-lg[OH⁻]

pH=14+lg[OH⁻]

pH=14+lg(8.7*10⁻¹²)=14-11.06=2,94

Answer 2

Answer: The pH of the solution is 2.94

Explanation:

pH is the measure of acidity or alkalinity of the solution.

Given
`OH^-` concentration,first we have to calculate the pOH.

`pOH=-\log [OH^-]`

`pOH=-\log (8.7* 10^(-12))`

`pOH=11.06`

Now we have to calculate the pH.

`pH+pOH=14\\\\pH=14-pOH\\\\pH=14-11.06=2.94`

Therefore, the pH of the solution is 2.94.