How to find pH, pOH, H3O+, and OH- STEP BY STEP

[@melissamaribel]

If you need more help with this topic, I highly recommend my step by step Chemistry notes. You can purchase the complete guide here ➡️ melissa.help/acidbase1notes

[@lilymeyers5312]

why am i only learning about this the night before my final. oh my god. this is so amazing. she's better than my chem teacher at explaining things. thank you so much.

[@voss666]

ugh same sis my final is tomorrow too

[@danieljacobs7288]

HAHA me too! hope you guys did well!

[@mf4741]

Yes we sure do mine's tomorrow but your's 2 years ago

[@Amber-me2wz]

mine is tomorrow lol

[@PARACOSM9883]

I am the one who is watching it before 3 hours of exam .

[@ashleysantiago488]

i dont know what i would do without you melissa, when i get my degree i wish i can thank you in person. your literally my tutor

[@tytheboss8528]

who else is here during Corona?

[@ifoundmyberries4203]

me....chem makes no sense and i'm so done

[@abbysalazar4476]

@@ifoundmyberries4203 same, it does not register in my brain whatsoever

[@des-oe1vl]

Yeah, this virus sucks.

[@benheisen2135]

You can tell that you put a lot of heart into this, thank you.

[@ellabougher3226]

oh my gosh. THANK YOU. I've been staring at my textbook for hours over this and haven't been able to sort out which formula gives you what- the summary at the end was a LIFESAVER!

[@alondralozano176]

Why can’t I understand chemistry! I’m trying so hard and I just can’t my brain doesn’t work

[@suraalsaeedi3822]

Alondra Lozano same problem

[@nataliamontserrat4519]

I feel u

[@samdevatechno]

Here too same problem

[@ربيعةفاتمة]

Same here

[@nah_.]

Cause you're overthinking it

[@cowslane1]

Thanks for putting the formulas up! You're really good at filtering the extra info that might give context for more advanced students but easily confuses beginner students. I come to your channel to get a fundamental breakdown of my 2 hour lectures lol. So thank you!!

[@LeoSandovalOficial]

🤷🏽‍♂️ im lost!!1 great video :)

[@melissamaribel]

Gracias Leo! 😊I'm sure you're thankful you aren't taking Chemistry 😂

[@LeoSandovalOficial]

aim very thankful , 😂

[@Ilovecheeze4eva]

You are literally the reason I passed my chem class in the summer ! I recommend you to everyone I know taking chemistry this semester

[@melissamaribel]

Yay!! Congrats on passing especially in the summer! Thank you so much for recommending me I really appreciate your support 💕

[@Ginfio]

Same

[@zahoosen321]

You are a wonderful human being, thank you so much for making them! :D You're editing skills are amazing plus you explain everything so well! I love how colourful and fun your videos are, you make chem fun. I hope you get tons of subscribers in the future, like this channel is great! :DDD

[@melissamaribel]

You are a wonderful human being for noticing!! 💕Thank you so much I'm so happy chem can be fun, what a concept right?!

[@zahoosen321]

@@tylerbergendahl3148 unnecessary.

[@brockfell6087]

Thank you so much for this video. It really helped!!! I can now just use the formulas and figure out the answers instead of struggling. Thank you!

[@Emmaherbst082]

can we take a moment to appreciate the effort thank you so much you helped me alot.

[@melissamaribel]

Aww thank you for noticing!

[@brennalegry1982]

You're an angel for helping us chemistry students. Thank you

[@Napalm832]

The pOH, pH, H+ and OH- concentration conversions are at 3:04 You're so clutch for this!

[@bwalyamulenga7852]

Her videos are so pretty 🥺🤧

[@narwhalguy3829]

thank you melissa. i just understood how to do this and i have a test soon. thanks so much. i liked and subscribed

[@jujuuu9606]

you. are. a. life. saver. Thank you so much! I barely understood the lesson in my chemistry class, but you explained it in a much detailed and better way. This will be on my final so this definitely helped!

[@readtochildrenbooks6288]

Thank you so much. You are so much easy to understand than my teacher. I passed the final, thanks to you!

[@lawrencehills6324]

I'm sure the information is good but you are going entirely too fast for introductory chemistry students.

[@regiadaisy]

It’s hard to keep on track. Great information though. Thank you

[@towsifbillah834]

you lietrally saved my 30 mins thanks

[@ray.whitby]

You literally make the coolest videos ever. You taught me more in 5 minutes than my teacher could in 2 hours. Thanks!

[@joannaseverson3977]

Absolutely the best!! Wish you were my instructor!!

[@nachocheeze6840]

Thanks!! Very helpful and clear to understand.

[@Jessetheoutdoorman]

Thank you for this awesome video! I always have trouble figuring out what formula to use! you broke it down barney style, my kinda style! Cheers!

[@rahma4043]

Oh my god thank you so much for this video Melissa!!!

[@leti_8862]

How did she get 3x10^-6? For oh-? When I did it, I got 3x10^-24

[@aspen2223]

Same, honestly I kinda wished she had showed the calculator 😢

[@melissamaribel]

I show the calculator part in my new series here: kzbin.info/www/bejne/jp_bc4ODaL2HjdE

[@gortiz9267]

I got the same result. If you have the pH already, to find pOH just substract the pH=8.5 to 14 (pOH = 14 - 8.5 = 5.5). Once you found pOH= 5.5, you can find OH. To find OH use this formula [OH-]= 10 ^- pOH. [OH] = 10^-5.5 = 3 x 10^- 9 or 3.1 x10^-9. The sig fig will depend on your professor really.

[@snehdeepdhallu5511]

You really make things seem so simple.😀😄😀😄

[@anitawatson2825]

My daughters score went from a 54 to a 90 thank you for what you do. I haven't seen a smile that big when it came to chemistry! Thank you.

[@melissamaribel]

WOW!! That is an amazing improvement! I'm so happy I could help 💕

[@smalls1713]

Im literally crying thank you for this.

[@melissamaribel]

You're welcome!

[@toofbrash]

i literally love u thank u sm bae

[@Fignewton8790]

This was so helpful

[@lmdrob5523]

In 2nd Q: problem b -- where did you get [OH-] = 3 x 10^-6? I got 10^-5 M?

[@justinpenn1081]

I did too

[@mue-mue-]

Wait where did the 14 come from

[@JoshuaSweetwood-df2dy]

Right? I'm there right now. Did you ever get an answer?

[@aspen2223]

Im at a 26% in my chem class and I wish I had found you earlier 😭

[@Daniel-jq4gq]

How u doin

[@arachnodose7382]

Eli is that you

[@Ginfio]

Thanks

[@Glimpseoflight_]

😭 you’ve saved me thank you

[@freebird5202]

This woman is amazing!!!!!! Been stuck on a question like this for over an hours and pithing 2 mins of watching this I actually get it!!!! Thank you so much :)

[@talaa.z5393]

Hello! This was a really helpful video. I'm currently in chemistry Higher Level in the IB system and we are learning about weak acid and base dissociation constants (ka, kb, pKa, pKb) and their calculations and I was wondering if you had a video about that or if you can make one as I'm finding them rather difficult.

[@melissamaribel]

Perfect timing on my next Live session this Sunday at 12PM PST, I will be going over how to find the Ka and Kb. kzbin.info/www/bejne/bouvmpmahLStp6M

[@aidanmcg9812]

Is H30 replaced by H+ in this video?

[@melissamaribel]

H+ and H3O+ both refer to an acid so either one is correct

[@ربيعةفاتمة]

@@melissamaribel oooo

[@1alex92]

We are not subscribers... we're students 💁🏾‍♀️ 😅 Thank you Melissa 😊 you are officially added to my college A team! I'm On my way to finally get my bachelor's degree 🙌🏾 😌

[@mohcartoon314]

hey please do videos on Nuclear chemistry

[@SDBoys]

I don't know why you don't have 50 mil subscribers because you are actually the best tutor out there. All the other tutors are so complex and you just get right to the point.

[@melissamaribel]

Thank you so much! 😊

[@squidjello6116]

tysm

[@mahu7127]

I love your videos ♥

[@melissamaribel]

Thank you! 💕

[@pandamilktea2474]

This was so helpful! 💗 I love how you explain it step by step in a simple way. My chemistry teacher can be a all over the place sometimes. 😅

[@luislopez1856]

Hi Melissa, I was wondering if the part where you calculated H30+ is at 1:20?

[@gtigio5067]

Instead of me watching over an hour and a half of zoom video lectures for my test tonight I just watched this😂

[@yasmanj9684]

I've been struggling learning this for weeks and now I learned them in 4 minutes. You are awesome ❣️

[@schroding3rinkedisi]

This is not fair! Some people wrote in the comments that they watched this video before they entered the university finals. And the problem is that I have to learn this as a high school student in Turkey. Moreover, this is known as one of the easiest subjects! It wears me out that I can't even go to university without knowing these chemical calculations.

[@ermoliasaurus4715]

omfg i love you

[@EGS3586]

my chem teacher was absent and told us to watch this 💀

[@abbysalazar4476]

i love you thank you so much, i hate online school so much because we have to read everything from the textbook and i can't understand it. you made it really simple and easy to understand thank you so so so much

[@angelidez13]

Holy crap I just found the pH Grail!!! You answered all my questions THANK YOU THANK YOU THANK YOU!

[@Anna8765]

Your amazing! I'm going to use this on my test! Thank you!

[@thestig560]

Even before watching any of your videos I make sure to hit the like button because I usually forget to do it when I click on your next video

[@jaredwilliams1554]

was struggling with the concepts, but after watching this video it makes sense. Thank you Melissa Maribel

[@Tesha15]

I don't see where you did H3O....

[@emilycampbell2033]

Babe ur amazing. But on the first one where’d you get OH- = 2.5 x 10^-11 ... where’d the -11 come from ?! Please help

[@melissamaribel]

Hey love, I got the 10^-11 by plugging 10^-pOH into my calculator, remember that it is 2nd log on your calculator. I show that step at 1:24

[@816jayshon]

i have zero interest in chemistry which is probably why it’s so hard for me to learn, but 4 minutes from your vid made more sense then all the notes I had to look through😂thanks

[@wroit12]

Finals are coming up and your videos, along with the step by step notes I purchased, have definitely helped me feel more confident about these exams! Going to put all of this to use tomorrow, Thanks Melissa! Hopefully I pass because I need to graduate in 2 1/2 weeks lol

[@melissamaribel]

Good luck on your exam tomorrow! Happy to hear the videos and notes are helping you feel more confident 😊

[@wroit12]

@@melissamaribel I got an 88% !! Thank you so much!!

[@melissamaribel]

Congratulations 🎉🎉🎉

[@dislexea]

Super lost. Wish it would show step by step I feel rushed and overwhelmed. Thanks for trying to help!

[@e.g.june.]

they are making us do this for 7th grade online school and don’t explain it well enough and i’m coming to this video after a mental breakdown from it 😎

[@melissamaribel]

Hope this video helped!

[@katknowsbest]

why did she put pH+ pOH= 14.. WHERE IS THE 14 coming from:(((

[@jakefromstatepharm]

total of H+ and OH- is 14...

[@doodletate]

youre a better teacher than my actual chem teacher god bless

[@kylasimilatan5984]

Can u explain further how’d you find the pH 3.39?

[@Dalmaciooo]

why if I calculate 10^(-10.61) it shows 24.55 but on your solution it shows 2.5 is there something wrong about my calculator?

[@maryamtoor904]

Where does it talk about H3O?

[@thetoaster1643]

H+ is a shorthand for H3O

[@bettyagajyelleh8043]

how have i not found your videos before! you're awesome

[@KahaleNaturals]

Thanks for the clear instruction. Easy to follow.

[@NiqHowie]

PLEASE HELP @ 2:05 when given the pH, on part A/ solving for acid concentration, my ti-30x calculator is getting a completely different number! I hit 2nd, log, type in -8.5, close the bracket, and im getting 0.0000000003… If i dont put in the negative exponent I get the number she is showing, but without decimal places, its a whole number. I guess ill pull out my ti-83 plus. Haha chemistry is so nerve wracking!

[@estascosasraras]

minute 2:36, How do you do the division of 1x10-14/3.1x10-9? I thought yo had to subtract the coefficients? I must be doing something wrong I get -5 not -6. Please help Melissa. PS thank you so much for all this work. Wait a second I got it, it is the rounding, I was using 3.1 not 3. Got it

[@johnmweenge2697]

You make things easier.... Can you make a video on molecular orbital diagram please 😢🙏🙏. You make me understand

[@mintgreen8396]

Oh now I get it. Thank you so much!

[@ethanporter7039]

where are you getting 3.39 as a pH?

[@ethanporter7039]

nvm

[@josieturk9326]

how did you go from log to the answer it doesnt really explain

[@melissamaribel]

Here’s how to plug it into your calculator: kzbin.info/www/bejne/jp_bc4ODaL2HjdE

[@Jordan-vf4up]

I love you

[@praiselynch911]

Incredible tutoring sesh. Thank you SO MUCH

[@aquariummama6453]

why are you talking so fast I dont understand how you try to teach people in a 3 min video

[@jakefromstatepharm]

@melissamaribel You are amazing...cheers!

[@airellek]

I love your work although I wish you wouldn't display the texts on the screen like that. It's a huge distraction and I cannot see the work that's being done. You should just do voice-overs.

[@airellek]

LOL i just realized you can move the text!!!! AWESOME

[@melissamaribel]

Thank you for the feedback, what text are you referring to?

[@oliyana9924]

I love you girl

[@arleneyap-ingew2378]

I just want to know how you arrived at the answer,, l think you should include the solution, , 👍😊

[@razewp6710]

Why is second log +-8.5 invalid in my calculator😭😭😭

[@ketzbook]

Thanks, I haven't made a video on this yet, and I needed to share one with my students. Going through all the youtube pH videos, this was the only one that was both correct and understandable.

[@melissamaribel]

Hey it's Ketzbook!!! 🎉

[@ketzbook]

@@melissamaribel yup, thanks for your vid ;)

[@AmberZaidi-syeda]

Literally you're amazing tutor more than our school teachers 😊🎉

[@raviarcot3145]

The explanation script on the screen hides the formulas

[@Oofdermaster101]

This video helped me understand the formula so much!

[@ayramgonzalez8058]

i love you

[@mukumbosimpito1571]

I passed my chemistry all because of you, youre a life saver

[@viktoriyaklimyuk6905]

where did you get 14 from the POH equation ???

[@shrimpish]

how did you get 3.39??? i can’t figure it out for the life of me

[@kingwooz38]

BUt i came for h3o+...

[@melissamaribel]

H+ and H3O+ both refer to the same thing, it’s the acid

[@Portokallejo]

Can anyone explain me is there a formula about h3O+

[@crumbcricket]

THANK YOU!!!

[@souphaphone68]

May I ask some question, Suppose if we have hydrolysis ammonia NH4+ NH3 + H+ Kh = [NH3][H+]/[NH4] = 10^-9 mol/L To 1 liter of pure water, 1mmol of ammonium chloride was dissolved, and pH was adjusted to 9 using sodium hydroxide. What will be the concentrations of ammonium ion and free ammonia?

[@smellydonut5088]

TYSM UR A LIFESAVER!

[@Jajsnsjsn]

How did you get the 3.39

[@angiedouglas2743]

I have not done calculations like this in a number of years and it would be really helpful if someone would step through exactly what you select on your graphing calculator and also going the reverse; if I have the [OH-], then what do I plug in to get to [H+].

[@mooks.]

why cant my professor just teach like this