Dental Admissions Test (DAT) Practice Test

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

  1. 3

  2. 7

  3. 11

  4. 5

The correct answer is: 3

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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