Respuesta :

Answer:

pOH = 9.4

Step-by-step explanation:

Mathematically;

pH + pOH = 14

pOH = 14 - pH

But pH = -log[H3O+]

From the question [H3O+] = 2.5 * 10^-5

Thus pH = -log (2.5 * 10^-5)

pH = 4.6

Thus;

pOH = 14-4.6

pOH = 9.4

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