Dental Admissions Test (DAT) Practice Test 2025 - Free DAT Practice Questions and Study Guide

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What is the pOH of a solution with a hydroxide ion concentration of 1*10^-3 M?

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The pOH is the negative logarithm of the hydroxide ion concentration in a solution. In this case, the hydroxide ion concentration is 1*10^-3 M. To find the pOH, you would take the negative logarithm of this concentration:

pOH = -log(1*10^-3) = -(-3) = 3

Therefore, the pOH of a solution with a hydroxide ion concentration of 1*10^-3 M is 3. This is why option A is correct.

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