To calculate the pH value that corresponds to a pOH of 5, you can use the relationship between pH and pOH in an aqueous solution:

pH + pOH = 14

Rearranging this equation, we can solve for pH:

pH = 14 - pOH

Substituting pOH = 5 into the equation:

pH = 14 - 5

pH = 9

Therefore, a pH value of 9 will give a pOH value of 5 in an aqueous solution.