Question

Identify the pH for the aqueous solution containing a concentration of

2.5 10-8 OH-

ions​

Answer 1

Given:

The concentration of hydroxyl ion is $2.5×10^{-8}$.

To find:

We have to find the pH.

Solution:

The concentration of hydroxyl ion is $2.5×10^{-8}$.

We know that $pOH=-log[OH]^-$.

Thus $pOH=-log(2.5×10^{-8})$.

pOH=7.60.

Again we know that pH+pOH=14

Thus pH=14-7.6

pH=6.4

The pH of the solution is 6.4.