Weak acid approximations 

I was struggling with this concept and you are the only channel that had a video, just goes to show the level of detail that is covered in this channel.Really appreciate your videos and time sir!

Exceptional video, short and simple, yet it taught me quickly and exactly. Thanks mate

Thank you! by the way is the 5% rule something we are expected to know of?

Thank you so much! Just in time for the exam :P

Could the exam ask you about dibasic weak acids and then would the formula for ka be different?

can i use ka = [H+]/pH for weak acids ? getting the [H+] from 10^-pH