Answer:
See explanation below
Explanation:
A solution of NaOH is a really strong base, so, when it's dissolved in water to form a solution, it dissociates completely in it's ions:
NaOH -------> Na⁺ + OH⁻
So, to calculate the pH, we first need to calculate the OH concentration. As it was stated before, a strong base like this, it will dissociate completely so the concentration of OH will be the same concentration of NaOH:
[OH⁻] = 8.545 M
The pH is calculated with the following expression:
14 = pH + pOH
So, with the OH we can calculate the pOH, and then, the pH:
pOH = -log[OH⁻]
pOH = -log(8.545) = -0.93
So the pH:
pH = 14 - pOH
pH = 14 - (-0.93)
pH = 14.93 and rounded it will be 14.9
