Chemistry, asked by melinadcruz1015, 9 months ago

What is the [OH−] of a solution with pH 5.75?

Answers

Answered by abcgr0161
2

ANSWER :

pH means potential of hydrogen and it is defined as the measure of concentration of hydrogen ions in a solution.

Mathematically, pH = -log[H^{+}]−log[H

+

]

Also, it is known that relationship between pH and pOH is as follows.

pH + pOH = 14

or pOH = 14 - pH

Therefore, putting the value of pH in the above relationship as follows.

pOH = 14 - pH

= 14 - 5.75

= 8.25

Hence, pOH = -log [OH^{-}]−log[OH

]

or, [OH^{-}][OH

] = antilog (-8.25)

= 5.62 \times 10^{-9}5.62×10

−9

Thus, we can conclude that the [oh−] of a solution with ph 5.75 is 5.62 \times 10^{-9}5.62×10^-9

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