What is the hydrogen ion and hydroxide ion concentration for a pH of 12.249? Is the solution an acid or a base? What is the pH of 7.84e-04 M KOH

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What is the hydrogen ion and hydroxide ion concentration for a pH of 12.249? Is the solution an acid or a base?

What is the pH of 7.84e-04 M KOH solution? Is the solution an acid or a base?

What is the hydrogen ion and hydroxide ion concentration for a pOH of 12.842? Is the solution an acid or a base?

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