pOH = 4.6
The sum of pH and pOH of a solution is 14as shown:
[tex]pH+pOH=14[/tex]Given the following parameter
pH = 9.4
Substitute the given parameters into the formula to have:
[tex]\begin{gathered} 9.4+pOH=14 \\ pOH=14-9.4 \\ pOH=4.6 \end{gathered}[/tex]Hence the pOH of the solution of pH of 9.4 is 4.6