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If a solution of Sulfuric acid H2SO4 has a concentration of 2.1 x 10-4 M or 2.1E-4 M, what is the concentration of its hydroxide ion?

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In a given solution, the concentration of hydrogen ions and hydroxide ions are related to each other by the following expression:

pH + pOH = 14

where, pH = - log[H+] and pOH = - log [OH-]

In this case, the concentration of...

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