What are the concentrations of hydronium and hydroxide ions in a solution with pH 2.6?

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wassup

answer is 4

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

answer: c

explanation:

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.