Answer:
-0.398
Step-by-step explanation:
pOH is a measure of hydroxide ion (OH-) concentration in a solution. A basic solution If a solution has pOH less than 7 then it is a basic solution and if pOH is greater than 7 then it is an acidic solution. Neutral solutions have pOH equal to 7.
![pOH=-\log \left [ OH^- \right ]](https://img.qammunity.org/2021/formulas/chemistry/high-school/k83jfcj3vnn8nkzet37i7mianpl6ryqe29.png)
To find pOH of 2.5 M NaOH, solve
= -0.398