Mannnnn, Melissa! Thank you so much! You are a life saver! I have really bad ADHD, so Chemistry and Math have been a great cause of stress during my College career, but you've helped me so much. I'd been sitting here stressed OUT FOR HOURS trying to understand the book and my professor and this lecture has literally taken all the stress away! You just make it click! THANK YOU, THANK YOU, THANK YOU!!!!
It is something you will need to know, these are aqueous solutions meaning they include water. For most ice tables you react the acid and water on the reactant side.
Did I miss something? or what part e) of the question skipped in the video? I am having trouble understanding the BCA table in the case of when adding the base ends up causing the pH level to go above the equivalence point.
Thanks for subscribing Grace! And feel free to tweet me your question at twitter.com/HelloMelissaM and use the hashtag #askmelissamaribel that's how I choose my questions for each Sunday live session. If you don't have a twitter account they are free to make and I have had several students make accounts just to ask me a question. Free twitter account for free tutoring, it's a win-win 😁Make sure to tweet me before Saturdays since that's when I make my lessons. Hope to see you on the next live on Sunday at 12PM PST.
@Melissa Maribel I’m confused because on your ice table, you added h2o for your weak acid. But my teacher didn’t add h2o when he dissociate CH3OOH, which is also a weak acid. He added water to weak base though.
Water can be added to either the weak acid or weak base, this is because water can act as either an acid or a base. It is also important to note what your titrant is, in my example here we are given a weak acid and we are titrating with a strong base. Do you remember the exact chemical equation you used for your ice table?
I don't see that water is being added here, instead we just partially dissociated the weak acid to H+ which is acid and it's conjugate base (CH3COO). Which is still correct, you just assume that it's in an aqueous solution meaning water is reacting with the weak acid to give H3O+ which is the same thing as H+. H+ and H3O+ both mean acid. Either way is correct. CH3COOH (aq) ⇌ H (aq)+ CH3COO(aq) or CH3COOH (aq) + H2O ⇌ H3O+ (aq)+ CH3COO(aq)
Hi there, I don't know if you are going to see this, but I thank God I bought your notes. You are the reason I am not completely failing chemistry. I was wondering if I can put a problem on here for help. In a titration of 25.00MLof 0.02366M NaOH was used to reach the endpoint. What is the molarity ((Ma) of the Phosphoric acid H3PO4?
Hi I am a high school student i just subscribed but i live in West Africa please how can I access all the high school lessons love your channel keep it up
There is a way to determine if x is small it is called the 5% rule, I go over that here in this other video ruclips.net/video/8ZLifdOOzqA/видео.html , if x is large you use the quadratic formula if x is small you do not use the quadratic formula.
Generally, also, if the Ka/Kb/Ksp/Keq that you're using the henderson-hasslebalch equation or ice table for is 10^-5 or smaller it is good to go. 10^-4 and above usually will be too big. (10^-4 is that cusp and can fall either way). :) But the 5% rule is great and you should know approximating and quadratic formula.
Hi! I have a question. In 59:29 you say that we haven't produced any CO2H- but in 46:41, we had a concentration of CO2H- of 0.0042M. So i was wondering what happened to the moles from the first step and why weren't they counted for third step? Thank You!
hello just want to ask. Is the hydronium ion concentration of a strong acid titrated with a strong base equal to the concentration of the strong base at the equivalent point
Hey Hoan, were you referring to the ka= x^2/0.100-x formula? If so that is how you find the x, remember that ka = products/ reactants if you need a refresher on how to find the k expression I recommend this video: ruclips.net/video/cmVuUFIaLW0/видео.html
Hi, I have been trying to download your free chemistry survival guide and I have put my email in several times and I have never received an email with the download. Why is it not working?
Hi Claire, email me at hello@melissamaribel.com and I’ll send you the guide. I’ve seen that sometimes it’s the type of internet browser that doesn’t allow you to see the guide.
New Titrations Notes ➡️melissamaribel.com/collections/all/products/titrations-notes
Your videos and notes are saving me learning chemistry during COVID while we don't have tutorials at uni. So easy to follow - thanks!!
Mannnnn, Melissa! Thank you so much! You are a life saver! I have really bad ADHD, so Chemistry and Math have been a great cause of stress during my College career, but you've helped me so much. I'd been sitting here stressed OUT FOR HOURS trying to understand the book and my professor and this lecture has literally taken all the stress away! You just make it click! THANK YOU, THANK YOU, THANK YOU!!!!
Ive never been this excited to watch a hour chemistry video!
😂
you are literally an angel, thank you so much for the help
There’s no timestamps 😢
Thank you so much for this video! 😊
You're very welcome Morgan! 💕
Plz make a video on how to calculate number of electrons involved in bond formation of a molecule
you're an AMAZING teacher.
Hey can anyone tell me whag could be a limitation, assumption and source of error for a titration lab
How did you get H2O on the reactant side of the ice table equation (43:21). Only the acid and base formula is given, not water.
It is something you will need to know, these are aqueous solutions meaning they include water. For most ice tables you react the acid and water on the reactant side.
Did I miss something? or what part e) of the question skipped in the video? I am having trouble understanding the BCA table in the case of when adding the base ends up causing the pH level to go above the equivalence point.
I just subscribed a little bit ago and these videos are so helpful. Is there any way you could make a video about radioactive half-life? Thanks!
Thanks for subscribing Grace! And feel free to tweet me your question at twitter.com/HelloMelissaM and use the hashtag #askmelissamaribel that's how I choose my questions for each Sunday live session. If you don't have a twitter account they are free to make and I have had several students make accounts just to ask me a question. Free twitter account for free tutoring, it's a win-win 😁Make sure to tweet me before Saturdays since that's when I make my lessons. Hope to see you on the next live on Sunday at 12PM PST.
@Melissa Maribel I’m confused because on your ice table, you added h2o for your weak acid. But my teacher didn’t add h2o when he dissociate CH3OOH, which is also a weak acid. He added water to weak base though.
Water can be added to either the weak acid or weak base, this is because water can act as either an acid or a base. It is also important to note what your titrant is, in my example here we are given a weak acid and we are titrating with a strong base. Do you remember the exact chemical equation you used for your ice table?
Melissa Maribel
CH3COOH (aq) ⇌ H (aq)+ CH3COO(aq)
I don't see that water is being added here, instead we just partially dissociated the weak acid to H+ which is acid and it's conjugate base (CH3COO). Which is still correct, you just assume that it's in an aqueous solution meaning water is reacting with the weak acid to give H3O+ which is the same thing as H+.
H+ and H3O+ both mean acid.
Either way is correct.
CH3COOH (aq) ⇌ H (aq)+ CH3COO(aq)
or CH3COOH (aq) + H2O ⇌ H3O+ (aq)+ CH3COO(aq)
Melissa Maribel Ohhhh okay! So just to be clear, adding H2O is *optional* for weak acid/base because H and H3O means the same thing?
Yes, it just depends on your teacher's preferences.
You are a life saver
You are wonderful Melissa thank you thank you!!!!🥹
I was wondering for the first titration problem can we do M1V1= M2V2?
Yes, you can
Hi there, I don't know if you are going to see this, but I thank God I bought your notes. You are the reason I am not completely failing chemistry. I was wondering if I can put a problem on here for help. In a titration of 25.00MLof 0.02366M NaOH was used to reach the endpoint. What is the molarity ((Ma) of the Phosphoric acid H3PO4?
Hi I am a high school student i just subscribed but i live in West Africa please how can I access all the high school lessons love your channel keep it up
Thanks for this amazing video
This video is awesome
Thanks!
Hi Melissa, I have a few questions. How do you know when x is negligible/small, and when do I use the quadratic equation?
There is a way to determine if x is small it is called the 5% rule, I go over that here in this other video ruclips.net/video/8ZLifdOOzqA/видео.html , if x is large you use the quadratic formula if x is small you do not use the quadratic formula.
Melissa Maribel Okay, thank you
Generally, also, if the Ka/Kb/Ksp/Keq that you're using the henderson-hasslebalch equation or ice table for is 10^-5 or smaller it is good to go. 10^-4 and above usually will be too big. (10^-4 is that cusp and can fall either way). :) But the 5% rule is great and you should know approximating and quadratic formula.
Thank you!
What app do you use for the notes?
What happened to part e for the weak acid & strong base? e) 41.0 mL
Thank you so much!!!!
Hi! I have a question. In 59:29 you say that we haven't produced any CO2H- but in 46:41, we had a concentration of CO2H- of 0.0042M. So i was wondering what happened to the moles from the first step and why weren't they counted for third step? Thank You!
😂cys tusodgioo
THANK YOU SO MUCH
hello just want to ask. Is the hydronium ion concentration of a strong acid titrated with a strong base equal to the concentration of the strong base at the equivalent point
Sorry I asked directly before watching the video. Thanks to your video, you are making this chemistry topic easier.
Can you make notes on titrations and strong electrolytes and weak??
I just finished my new titrations notes, you can find those here: melissamaribel.com/collections/all/products/titrations-notes
Can u work in my college please 😭
Do you still do a live show?
How did you get the formula for the ice table?
Hey Hoan, were you referring to the ka= x^2/0.100-x formula? If so that is how you find the x, remember that ka = products/ reactants if you need a refresher on how to find the k expression I recommend this video: ruclips.net/video/cmVuUFIaLW0/видео.html
From pârt d & e do not understand
Hi, I have been trying to download your free chemistry survival guide and I have put my email in several times and I have never received an email with the download. Why is it not working?
Hi Claire, email me at hello@melissamaribel.com and I’ll send you the guide. I’ve seen that sometimes it’s the type of internet browser that doesn’t allow you to see the guide.
Is there like another RUclipsr on anatomy and physiology
Drop the base😎🤟🔥
is this IGCSE chemistry or AS chemistry
These specific topics are not part of IGCSE or AS, these topics are for AP Chemistry and General Chemistry 2.
Hello
Techer do you have a trick to calculate titration
😍😍😍😍😍😍
Have a big deal with titrations
Drop the base hahaha