How to find pH, pOH, H3O+, and OH- STEP BY STEP
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- Äas pĆidĂĄn 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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The pOH, pH, H+ and OH- concentration conversions are at 3:04 You're so clutch for this!
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Alondra Lozano same problem
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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!
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In 2nd Q: problem b -- where did you get [OH-] = 3 x 10^-6? I got 10^-5 M?
I did too
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Yay! You are so welcome
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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?
Just found your video after struggling with these equations for like 2 hours-- you've saved my grades haha.
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How did she get 3x10^-6? For oh-? When I did it, I got 3x10^-24
Same, honestly I kinda wished she had showed the calculator đą
I show the calculator part in my new series here: czcams.com/video/XnxBPM3XTWo/video.html
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.
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
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Hope this video helped!
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.
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
How do you calculate for these (pH, pOH, H3O+, and OH-) if a value in M is given?
Hi Melissa, I was wondering if the part where you calculated H30+ is at 1:20?
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
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tysm
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thanks mam... from bangladesh
on the link to the free chem guide, I cant see a form to download it :( help please
Email me at hello@melissamaribel.com and Iâll take care of that đ
Really? It's THAT simple? WHY must they make it so hard. Melissa you're a saint!
Aw thanks Chloe, so happy it's a lot easier now :)