A solution has a Molarity of 1.3 x 10^-6 M. Calculate the pH A) 5.89
B) 4.9
C) 5.98
D) 9.14

A = 5.89

Explanation:

Given data:

Molarity of solution = 1.3 ×10⁻⁶ M

pH of solution = ?

Solution:

pH = -log [⁺H]

By putting values,

pH = -log[1.3 ×10⁻⁶ M]

pH = 5.89

Thus, option A is correct.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.