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02-04-2019
Chemistry

contestada

What is the [h3o+] for a solution at 25°c that has poh = 5.640?

Respuesta :

11-04-2019

Answer:

= 4.37*10^-9 M

Explanation:

We know that;

pH + pOH = 14

Therefore;

pH = 14 - pOH

Which means; pH = 14 - 5.64

= 8.36

But;

pH = -log[H3O+]

Thus;

8.36 = -log[H3O+]

[H3O+] = 10^(-8.36)

= 4.37*10^-9 M

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