Answer: The pOH of the solution is 11.64.
Explanation: The pH and pOH of a solution are related to the concentration of hydrogen ions ([H+]) and hydroxide ions ([OH-]) by the equation:
pH + pOH = 14
Therefore, we can first calculate the pH of the solution as follows:
pH = -log[H+]
pH = -log(4.37e-3)
pH = 2.36
Then, we can use the equation above to find the pOH:
pOH = 14 - pH
pOH = 14 - 2.36
pOH = 11.64