For starters, you will need to know the concentration of your sodium hydroxide solution, to begin to determine final pH. For the effect of pH on your tests, you might want to start with the reactions that they undergo, and try to see if excess H+ or OH- are likely a problem.
These are some hints, that I've given you, to help you learn for yourself. Which is what we do, 'round here. Complete how much, what, and why,are answers you're supposed to come up with yourself.