Question

What is the pH of a solution with [H+] = 1.25 mc015-1.jpg 10–10 M? Use mc015-2.jpg. –10.1 –9.90 7.90 9.90

Answer 1

We use the relationship:
pH = -log[H⁺]
pH = -log(1.25 x 10⁻¹⁰)

pH = 9.9

Answer 2

Answer : Option D) 9.90

Explanation : The pH of the solution can be determined by the formula as

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

Here, the concentration of $[H^{+}]$ = $1.25 X 10^{-10} M$

So, substituting this value in above formula;

we get pH = -log  $[ 1.25 X 10^{-10} M]$

Therefore, pH = 9.90.