A tutorial on how to calculate the pH, hydronium ion concentration, pOH and hydroxide ion concentration.
Пікірлер: 49
@gregorycotier545210 ай бұрын
I loved your way of explaining. Always recheck anything before you publish because you included a mistake in the final calculation. Well done.
@Alena-vt6hb10 ай бұрын
Hi all, I made this video 8 years ago when I was in 11th grade. I had to make this for school and had no ambition to make chemistry videos. As people have pointed out, there's a mistake in the calculations. Sorry that happened, please note what people have commented about the end. Keep in mind this was made by 16-year-old me. I never went on to study chemistry past first year university, I study philosophy now. I'm never remaking this, but some people found it helpful so that's why I never deleted it. Much love.
@trohnb81043 ай бұрын
Thank you for not deleting this.
@garymcleod67726 жыл бұрын
Although a few errors were made, I thought the presentation was excellent. I see she has no other videos. I hope she wasn't discouraged. I would like to see more from her.
@tony2jones47 жыл бұрын
-log(1x10^-7) is 7 not 1.9 this could be very confusing for some people, please fix the error and re post
@alanalee42587 жыл бұрын
Agreed.
@ayeshamumtaz16224 жыл бұрын
Yess agreed
@ChristisKingClips Жыл бұрын
yes same thing here
@Alena-vt6hb10 ай бұрын
Hi all, I made this video 8 years ago when I was in 11th grade. I had to make this for school and had no ambition to make chemistry videos. As people have pointed out, there's a mistake in the calculations. Sorry that happened, please note what people have commented about the end. Keep in mind this was made by 16-year-old me. I never went on to study chemistry past first year university, I study philosophy now. I'm never remaking this, but some people found it helpful so that's why I never deleted it. Much love.
@gold87807 жыл бұрын
The question contradicts from your answer in ex.3 In Q the value is 1.2x10^-7 whereas in the answer it is 1.0x10^-7 Also the calculation is a total error as -log10^-7 does not equals 1.920... rather its just 7. So I'd suggest you to fix it ..ma'am
@ChristisKingClips Жыл бұрын
pls continue thanks to you this topic has been easy for me but for the last part you made a mistake pls continue
@deadwinggaming174 жыл бұрын
Thanks mam I am from India
@phongdang28747 жыл бұрын
I love this, thank you. You're awesome.
@skasifrahaman53644 жыл бұрын
Well ....i understand here ...a big thank you #mam
@brainscientist7 жыл бұрын
Hi Alena, your last problem is calculated incorrectly - the pH is about 6.62, and the pOH 7.38 for 1.2x10^-7 sulfuric acid. Since the sulfuric acid concentration is of the order or 10^(-7), the pH can't be very different from 7.0
@fsmith87762 жыл бұрын
Thanks for providing the correct numbers b/c I got the same as you, but I was starting to get confused...
@hunzaeboyy043 жыл бұрын
Thanks a ton, ma'am!!!
@alessiaf29822 жыл бұрын
THANK YOUU
@alanalee42587 жыл бұрын
For Ex. 3 at 5:50, you changed the [H+] concentration from 1.2x10^-7 to 1.0x10^-7 when you simplified the problem. Kinda confusing
@harrycorneliusfleming13996 жыл бұрын
Thanks for the help but omg so confusing when you made the few mistakes.
@paulettewie23554 жыл бұрын
How many times stronger is the hydrogen ion concentration of pH 4 solution as compared with a pH 9 solution
@reshellefleming85557 жыл бұрын
this is very informative but i have a problem.... i cant use my calculator properly; so can u do a repost or something to add how to use your calculator to get the answer for the H3O+ ph at the video time 4.38 mins
@macariotindoy57415 жыл бұрын
can you explain how did you come up with 6.3 X10^2 M please
@ayeshamumtaz16224 жыл бұрын
Hey please help me i can't get the correct answer for Ph in ex 3 my answer is 7 ?
@sadafbozai30153 жыл бұрын
U did it right she made a small mistake she put 1.0x10^-7 instead of 1.2x10^-7 that’s why your answer and her is different:)
@jeykhan97875 жыл бұрын
thank you
@MarcGameplays6 жыл бұрын
In the 3rd problem you could've used the following formula, which is MUCH shorter: Kw = [H₃O+][OH-] (Kw = 1 * 10^(-14))
@androman95878 жыл бұрын
At 5:00 You need 3 significant digits because leading zeros don't count!
@MaanQaboojeLyrics4 жыл бұрын
When you were 1.9 what you do
@fizkhn95465 жыл бұрын
Kya bata rahi hain kuch samj nhi a raha.....?
@kavin73846 жыл бұрын
When tommorow is ur exam
@vesanura45186 жыл бұрын
Kavin RK today😂
@msdkisorkumar41654 жыл бұрын
You are doing good but in INDIA we should not use calculator we should use our brain..
@clickbait88137 жыл бұрын
damn, so confusing.. I thought I got it wrong but I went over the solutions and tried it over and over again then I realized..the tutorial is wrong.-log 1.0x10^-7.1 is actually 7. hahaha.
@alain8hunter2866 жыл бұрын
Thank you! I thought I was wrong.
@alenaleonova86235 жыл бұрын
Did I ask? Hahaha.
@sadafbozai30153 жыл бұрын
@@alenaleonova8623 I think you should continue making videos cause this video really helped me understand how to calculate the pH, please :)
@peaohvee17846 жыл бұрын
useless. no one can teach this topic correctly. I applaud you for trying.
@alexandramangahas90323 жыл бұрын
In her 3rd problem its 1.2x10 now its 1.0. Then the answer is different. You have to delete this video. And make a new one because its confusing.
@carlooarde7085 Жыл бұрын
the last part is confusing as hell 😭😭
@tachohemekh89804 жыл бұрын
You didn't calculate it. Please some error is there fixed it.
@PANKAJYADAV-vc7yo3 жыл бұрын
Speak in hindi ok English girl ph what speepking phich h
@rakshitag64786 жыл бұрын
Hi medam,u write directly answer
@alenaleonova86235 жыл бұрын
I don't remember asking for your opinion, medam.
@clintonted24585 жыл бұрын
PLEASE DONT DRINK AND TEACH
@joashgovender79117 жыл бұрын
thank you
@alenaleonova86235 жыл бұрын
You're welcome home boy.
@affantelek28782 жыл бұрын
@@alenaleonova8623 I realize this comment was posted like 3 years ago lol, but there were some errors if you have noticed from the other comments and you didn't reply to any of them so I was just pointing it out even better for you??