pH and Ka for Weak Acids NO ICE TABLE in MCAT Chemistry vid 4

[@thirstyfajita4115]

Thanks. Appreciate these channels that do somewhat niche topics with MCAT focus. Khan sometimes just doesnt cut it

[@Leah4sciMCAT]

My pleasure!

[@darrenochoa7230]

Why didn't I find this channel sooner ?!?!!??!!!??!?.

[@Leah4sciMCAT]

Better late than never? Are you studying for the MCAT or something else?

[@darrenochoa7230]

+Leah4sciMCAT the mcat! I took the exam April 1st and I'm taking it again July 22nd

[@Leah4sciMCAT]

Oh wow that's really close together. Email me to discuss your scores

[@jsscmoran]

you are more than amazing ... I being struggling with this stuff for weeks!!!!

[@Leah4sciMCAT]

happy to help!

[@didyousee3935]

Leah you are amazing. Have you tried the pH math trick shortcut: If [H+] is (N x 10^-M) -> pH = (M - 1) . (10 - N). It is great and super fast!

[@Leah4sciMCAT]

Thanks for the tip!

[@robertkranz4756]

Subbed! So when you got use use mols straight into the ph=-log equation that is only with strong acids right? Otherwise we execute the Mi x^2 equation

[@Leah4sciMCAT]

Yes. Since strong acids experience complete dissociation of their protons in solution, you can directly substitute the concentration of any monoprotic acid into the pH equation. For weak acids, since there is incomplete dissociation, the process I show in this video must be followed.

[@renderz8435]

Will Ka values be given in mcat?

[@Leah4sciMCAT]

Yes, unless THAT is what the question asks you to calculate.

[@adrienne2838]

would we every have like 3X^2 or is it always x^2

[@Leah4sciMCAT]

Not for an acid dissociation reaction like this. For help with questions like this and more, I recommend joining the MCAT Study Hall. For more details, visit join.mcatstudyhall.com/ or contact me through my website leah4sci.com/contact/

[@admireurgod]

This was super helpful! Thank you!

[@Leah4sciMCAT]

You're so welcome!

[@newchannel-vk7ms]

ah yes, THIS is what i was looking for

[@Leah4sciMCAT]

Glad it came at the right time, hope it helped!

[@NatureNow-k4q]

Please next video on problems/numericals on Equilibrium Constant Kc. Discuss at least 5 problems in that video.. I really need help with that topic

[@Leah4sciMCAT]

I'm sorry, I'm currently working on other video topics right now

[@Yankeesftw23]

Wow great video

[@Leah4sciMCAT]

+Yankeesftw23 Thank you!