Question

What is the pH of a solution in which [H 3O +] = 3.8 × 10 -8 M?

Answer 1

Answer:

The answer is 7.42

Explanation:

The pH of a solution can be found by using the formula

$pH = - log [ { H_3O}^{+}]$

From the question we have

$pH = - log(3.8 \times {10}^{ - 8} ) \\ = 7.420216...$

We have the final answer as

7.42

Hope this helps you