Question

calculate the ph of a solution having [OH-] = 8.2 x 10 ^-8M

Answer 1

Answer:

6.91

Explanation:

To find the pH we must first find the pOH

The pOH can be found by using the formula

pOH = - log [ {OH}^{-} ]

We have

$pOH = - log(8.2 \times {10}^{ - 8} ) \\ = 7.086186...$

pOH = 7.09

Next we use the equation

pH = 14 - pOH

We have

pH = 14 - 7.09

We have the final answer as

6.91

Hope this helps you