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What is the pOH of a solution that has a hydronium ion concentration [H3O+] of 8.26 x 10–5 M?

1 Answer

6 votes

Answer:

Step-by-step explanation: To calculate the pH of a solution, use the equation

p

H

=

log

[

H

3

O

+

]

Since we are given the hydronium ion (

H

3

O

+

) concentration of the solution, we can plug this value into the formula.

p

H

=

log

[

1.00

×

10

4

M

]

p

H

=

4

The pH of this solution is 4.

Added notes:

p

H

=

p

H

3

O

+

because hydrogen ions attach to water molecules for form hydronium ions.

Some other key things to remember for pH calculations include:

pH + pOH = 14

pH = -log[

H

+

]

pOH = -log[

O

H

]

[

H

+

]

=

10

p

H

[

O

H

]

=

10

p

O

H

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