Please don't ever stop making videos I spent hours today trying to comprehend my teachers powerpoint and almost gave up on my exam tomorrow. I immediately understood EVERYTHING just from watching your video just one time. Thank you!!!!!
laurenkellyg Wow, that is a big compliment. I appreciate the feedback. This is a challenging topic, and I am glad it clicked. Please keep on trying and learning!
I found a short cut to this. Use the simple formula from the beginning of the video pH= -log [the given concentration] then solve. Then subtract your answer from 14 and you will only be about .1 or .2 off it i is a lot quicker, try it! :D
Hello,in the first problem i kept trying to calculate the 2 times 5.7 X 10 to the -7th a couple of times and i kept coming up with 1.14 x 10 to the -6th. I put it in like this: (5.7 X shift log-7(2)) =1.14 X 10 to the -6th. I cant see how you got 1.14 X 10 to the -9th,can you plz explain.Thanks!
"log" has no value. Log is short for logarithm (of the base 10 in this case). In simple it works as follows: log (10^x) = x e.g. log (1000) = log (10^3) = 3 ^ is mark for upper index
If you want to know, how to properly and *correctly* calculate the last example with dilution of base, go to this link: www.researchgate dot net/post/What_is_the_pH_of_very_diluted_for_example_hydroxide#view=5dfc383f2ba3a1661305ce8c Because obviously base cannot have pH lower than 7.
Example 3 is conceptually incorrect. With a concentration that low of a base how did you end up with a pH of below 7. Makes no sense. There is a another calculation that must be used when concentration is that small. Educate yourself.
Thats correct. looking at it , mg(oh)2 is a strong and should have a ph greater than 7. can one help me how to calculate that
4 года назад
to see how to calculate the last example go to www.researchgate.net/post/What_is_the_pH_of_very_diluted_for_example_hydroxide
4 года назад
@@ericksonhangula8085 if you want to see how to calculate the last example, go here: www.researchgate.net/post/What_is_the_pH_of_very_diluted_for_example_hydroxide