Now that we've done a sample ICE Problem; its time to try one on your own What will happen to the pH when we add 40 ml 9.486 * 10⁻³ M Sodium hydroxide to the initial solution?
Hint: When you subtract the OH⁻ from the H⁺ it ends up with a negative number: This is not J negative concentration instead its how much extra H⁺ will need to be formed to neutralize the remaining OH⁻