Infinitely grateful for all your videos! It's been of great help to revise from them for the past 2 years for my IB chem exams tomorrow.
@davidcap8569
Жыл бұрын
Thank you very much, I have a test tomorrow and thanks to your video I was able to grasp the concept of calculating pH of weak As and Bs. I'm very grateful, keep it up!
@MSJChem
Жыл бұрын
Glad I could help.
@roysakala2726
2 жыл бұрын
Thanx it was so ease to get
@rugvedpawar7114
5 жыл бұрын
is there a specific list of weak and strong acids and bases anywhere which we could access. If you could please list down some key ones or show me where to get them, that'd be awesome. Cheers!
@bananabread2188
5 ай бұрын
isnt x at 4:01 the product of both nh4+ and oh-? then why are we saying that x is the concentration of OH- in solution only?
@MSJChem
5 ай бұрын
Because we are only interested in the [OH-] to calculate pH.
@safaripvp9733
Жыл бұрын
Hi why is the equation x^2/0.5 and not x^2/0.5-x?
@tonmoyroy2136
Жыл бұрын
x is negligible in this case, so we would need it on the top to get a non-zero value, but on the bottom, the number is so small that subtracting x from 0.5 wouldnt matter
@MSJChem
Жыл бұрын
Correct, the assumption is that subtracting x wouldn’t make a big change in the final answer.
@rugvedpawar7114
5 жыл бұрын
im also confused about the whole weak acid and base thing....isnt a pH of 2.5 a strong acid. and if a strong acid is given to us, is calculating pH of Ka and stuff going to have a different methodology? please lemme know, cheers!
@MSJChem
5 жыл бұрын
Calculating the pH of a strong acid is covered in another video. A strong acid can have a pH of 2.5 if it has a low concentration. We don’t apply the concept of Ka to strong acids and bases.
@mukundmanian4180
4 жыл бұрын
I'm also confused about this, you found out that the pH of CH3COOH is 2.5 using Ka. But is CH3COOH not a weak acid? How can it have a strong pH?
@MSJChem
4 жыл бұрын
Mukund Manian A weak acid can have a pH of 2.5 depending on its Ka value and initial concentration - the higher the Ka the stronger the acid. Strong acids can have a pH value of 2.5 if the concentration of H+ is low enough.
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