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

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  • čas pƙidĂĄn 9. 07. 2024
  • Each step on how to find pH, pOH, [H+], and [OH-] is all explained in this video. Plus I'll even show you how to plug it into your calculator, and the specific significant figure rules with pH and pOH and at the end I'll give you a summary of when to use each formula!
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Komentáƙe • 270

  • @melissamaribel
    @melissamaribel  Pƙed 3 lety +16

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

  • @lilymeyers5312
    @lilymeyers5312 Pƙed 5 lety +491

    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
      @voss666 Pƙed 5 lety +4

      ugh same sis my final is tomorrow too

    • @danieljacobs7288
      @danieljacobs7288 Pƙed 3 lety +2

      HAHA me too! hope you guys did well!

    • @mf4741
      @mf4741 Pƙed 2 lety +3

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

    • @Amber-me2wz
      @Amber-me2wz Pƙed 2 lety

      mine is tomorrow lol

    • @PARACOSM9883
      @PARACOSM9883 Pƙed 2 lety +4

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

  • @Ilovecheeze4eva
    @Ilovecheeze4eva Pƙed 5 lety +195

    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
      @melissamaribel  Pƙed 5 lety +13

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

    • @Ginfio
      @Ginfio Pƙed rokem +1

      Same

  • @cowslane1
    @cowslane1 Pƙed 3 lety +41

    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!!

  • @ashleysantiago488
    @ashleysantiago488 Pƙed 3 lety +20

    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

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    @tytheboss8528 Pƙed 4 lety +96

    who else is here during Corona?

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      @ifoundmyberries4203 Pƙed 4 lety +5

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

    • @abbysalazar4476
      @abbysalazar4476 Pƙed 4 lety +2

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

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      @des-oe1vl Pƙed 4 lety

      Yeah, this virus sucks.

  • @Napalm832
    @Napalm832 Pƙed 4 lety +22

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

  • @ray.whitby
    @ray.whitby Pƙed 3 lety +16

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

  • @ellabougher3226
    @ellabougher3226 Pƙed 4 lety +3

    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!

  • @zahoosen321
    @zahoosen321 Pƙed 5 lety +49

    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
      @melissamaribel  Pƙed 5 lety +6

      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
      @zahoosen321 Pƙed 4 lety

      @@tylerbergendahl3148 unnecessary.

  • @yasmanj9684
    @yasmanj9684 Pƙed 4 lety +4

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

  • @freebird5202
    @freebird5202 Pƙed 4 lety +5

    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 :)

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    @alondralozano176 Pƙed 5 lety +237

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

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    @benheisen2135 Pƙed 2 lety +3

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

  • @jaredwilliams1554
    @jaredwilliams1554 Pƙed 4 lety +2

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

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    @abbysalazar4476 Pƙed 4 lety +2

    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

  • @Anna8765
    @Anna8765 Pƙed 5 lety +4

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

  • @pandamilktea2474
    @pandamilktea2474 Pƙed 3 lety +4

    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. 😅

  • @LeoSandovalOficial
    @LeoSandovalOficial Pƙed 5 lety +50

    đŸ€·đŸœâ€â™‚ïž im lost!!1 great video :)

    • @melissamaribel
      @melissamaribel  Pƙed 5 lety +4

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

    • @LeoSandovalOficial
      @LeoSandovalOficial Pƙed 5 lety +1

      aim very thankful , 😂

  • @brockfell6087
    @brockfell6087 Pƙed 3 lety +1

    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!

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    @mukumbosimpito1571 Pƙed měsĂ­cem

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

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    @jujuuu9606 Pƙed rokem

    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!

  • @isabellakeebler3960
    @isabellakeebler3960 Pƙed 2 měsĂ­ci

    This video helped me understand the formula so much!

  • @angelidez13
    @angelidez13 Pƙed 4 lety +2

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

  • @narwhalguy3829
    @narwhalguy3829 Pƙed 3 lety +1

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

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    @brennalegry1982 Pƙed rokem

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

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    @matthewsoliz5625 Pƙed 3 lety

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    @jasonw3404 Pƙed 4 lety

    This just helped me so much, thank you. :)

  • @KahaleNaturals
    @KahaleNaturals Pƙed 3 lety +1

    Thanks for the clear instruction. Easy to follow.

  • @Jessetheoutdoorman
    @Jessetheoutdoorman Pƙed 4 lety

    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!

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    @aleidaberumen9794 Pƙed 3 lety

    THANK YOU SO MUCH ! I DIDNT UNDERSTAND WHEN THE TEACHER EXPLAINED IT BUT NOW I DO

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    @rahma4043 Pƙed 3 lety

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    @nachocheeze6840 Pƙed 4 lety

    Thanks!! Very helpful and clear to understand.

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    @melissekristine8428 Pƙed 4 lety

    YOU ARE AMAZING AT EXPLAINING THANK YOU!!!

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    @AmberZaidi-syeda Pƙed 4 měsĂ­ci

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    @mintgreen8396 Pƙed 3 lety +1

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    @ali.happy4u299 Pƙed 3 lety

    Your jus beyond amazing thank you so much college chem has been so hard cause we learn one thing in class and it’s different on the hw

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    @user-ek9xc3oj5t Pƙed 11 měsĂ­ci

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    @crumbcricket Pƙed rokem

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    @sciencenerd7639 Pƙed 2 lety

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    @doodletate Pƙed 4 lety +1

    youre a better teacher than my actual chem teacher god bless

  • @ketzbook
    @ketzbook Pƙed 2 lety

    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
      @melissamaribel  Pƙed 2 lety +1

      Hey it's Ketzbook!!! 🎉

    • @ketzbook
      @ketzbook Pƙed 2 lety

      @@melissamaribel yup, thanks for your vid ;)

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    @joannaseverson3977 Pƙed 3 lety

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

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    @Glimpseoflight_ Pƙed 4 lety

    😭 you’ve saved me thank you

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    @jordanramirez5034 Pƙed 4 lety

    This helped sm

  • @malg.3149
    @malg.3149 Pƙed 5 lety +1

    Thank you for helping with chemistry!

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    @ashleysantiago488 Pƙed 3 lety

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    @1alex92 Pƙed 2 lety +3

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    @chakupalezaphiri4492 Pƙed 3 lety

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    @selinebre Pƙed rokem

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    @gtigio5067 Pƙed 3 lety +3

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

  • @lunaogul1212
    @lunaogul1212 Pƙed 4 lety

    Soooooo simple thank you

  • @schroding3rinkedisi
    @schroding3rinkedisi Pƙed 2 lety +1

    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.

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    @Emmaherbst082 Pƙed 2 lety +1

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    thank you so much you helped me alot.

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    @drewwhite9280 Pƙed 3 lety

    Literally you’re the reason I’m passing AP chem

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    @towsifbillah834 Pƙed 2 měsĂ­ci

    you lietrally saved my 30 mins thanks

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    @mahu7127 Pƙed 5 lety

    I love your videos ♄

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    @adequatetricks2728 Pƙed 2 lety

    You are my savior

  • @lmdrob5523
    @lmdrob5523 Pƙed 5 lety +6

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

  • @memememe2488
    @memememe2488 Pƙed 4 lety

    i understand.. you are the best teacher😍😍😍😍😍😍 i am from bangadesh

  • @california1237
    @california1237 Pƙed 5 lety

    U save my day thank u..

  • @Ginfio
    @Ginfio Pƙed rokem

    Thanks

  • @Dalmaciooo
    @Dalmaciooo Pƙed rokem

    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?

  • @Eb0nut
    @Eb0nut Pƙed 2 lety

    Just found your video after struggling with these equations for like 2 hours-- you've saved my grades haha.

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    @ihartu5549 Pƙed 11 měsĂ­ci

    I love you ❀

  • @leti_8862
    @leti_8862 Pƙed 4 lety +8

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

    • @aspen2223
      @aspen2223 Pƙed 3 lety

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

    • @melissamaribel
      @melissamaribel  Pƙed 3 lety

      I show the calculator part in my new series here: czcams.com/video/XnxBPM3XTWo/video.html

    • @gortiz9267
      @gortiz9267 Pƙed 3 lety

      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.

  • @estascosasraras
    @estascosasraras Pƙed 2 lety

    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

  • @e.g.june.
    @e.g.june. Pƙed 4 lety +1

    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 😎

  • @talaa.z5393
    @talaa.z5393 Pƙed 5 lety

    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
      @melissamaribel  Pƙed 5 lety

      Perfect timing on my next Live session this Sunday at 12PM PST, I will be going over how to find the Ka and Kb. czcams.com/video/8ZLifdOOzqA/video.html

  • @theamazingglacr51
    @theamazingglacr51 Pƙed 4 lety

    How do you calculate for these (pH, pOH, H3O+, and OH-) if a value in M is given?

  • @luislopez1856
    @luislopez1856 Pƙed 3 lety

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

  • @wroit12
    @wroit12 Pƙed 5 lety +4

    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
      @melissamaribel  Pƙed 5 lety +2

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

    • @wroit12
      @wroit12 Pƙed 5 lety +2

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

    • @melissamaribel
      @melissamaribel  Pƙed 5 lety +1

      Congratulations 🎉🎉🎉

  • @816jayshon
    @816jayshon Pƙed 2 lety +1

    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

  • @austinschwartz7424
    @austinschwartz7424 Pƙed 3 lety

    test in three hours your a life saver

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    @squidjello6116 Pƙed 3 lety

    tysm

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    @sonicfeetpics2782 Pƙed rokem +1

    I think I love you 😆

  • @shahriarkawsar5526
    @shahriarkawsar5526 Pƙed 10 měsĂ­ci

    thanks mam... from bangladesh

  • @isabelladellagatta5050
    @isabelladellagatta5050 Pƙed 3 lety

    on the link to the free chem guide, I cant see a form to download it :( help please

    • @melissamaribel
      @melissamaribel  Pƙed 3 lety

      Email me at hello@melissamaribel.com and I’ll take care of that 😊

  • @chloerinell784
    @chloerinell784 Pƙed 4 lety

    Really? It's THAT simple? WHY must they make it so hard. Melissa you're a saint!

    • @melissamaribel
      @melissamaribel  Pƙed 4 lety

      Aw thanks Chloe, so happy it's a lot easier now :)