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marissa [1.9K]
3 years ago
10

The [OH-] of an aqueous solution is 3.5 x 10-5. What is the [H+]?

Chemistry
1 answer:
Sergeeva-Olga [200]3 years ago
4 0

Answer: The concentration of hydrogen ion in the given solution is 2.81 \times 10^{-10}.

Explanation:

pOH of a solution is the negative logarithm of concentration of hydroxide ions.

Hence, if [OH^{-}] is 3.5 \times 10^{-5} then its pOH value is calculated as follows.

pOH = -log [OH^{-}]\\= -log (3.5 \times 10^{-5})\\= 4.45

Now, the relation between pH and pOH is as follows.

pH + pOH = 14

pH + 4.45 = 14

pH = 14 - 4.45

= 9.55

And, pH is the negative logarithm of concentration of hydrogen ions. Hence, [H^{+}] is calculated as follows.

pH = -log [H^{+}]\\9.55 = -log [H^{+}]\\H^{+} = 2.81 \times 10^{-10}

Thus, we can conclude that the concentration of hydrogen ion in the given solution is 2.81 \times 10^{-10}.

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