AP Chemistry: Solubility Product 1

[bunzaroni]

Why is it that after you square 2x, why do you still hVe 4x squared.

[soccrroxmysox]

phosphate!!!!

is soluble.

[roachey15]

Thank you. You're a very enthusiastic teacher and it helps a lot.

[bannanaiscool]

@euch27 Nothing!

Chemguy

[bannanaiscool]

@euch27 You can exclude them, because they don't change their concentration...like putting in a 1 for them in a calculation!

Chemguy

[saidi75]

chemguy i need help with titration equation.....need help and i wanna join ur site as well ple help me...thanx

[Warstrong]

1:55 *deep breath* squaaaaaaaaared, right?

[mickeyangelo720]

oh my goodness!!!! that's for bringing it all together with Le chateliers principle and the Q value...it makes sense now~

[kayuath]

hmm, doesn't chemists or any scienists prefer saying "Centigrade" rather than "Celsius"?

[bannanaiscool]

@kayuath Not really.

Chemguy

[ashleytnava1]

@kayuath my physiology teacher says centigrated i was like ?? lol

[ElCrapolaBar]

i wish i knew about your videos earlier haha, woulda helped alot

[goblinmaje]

You are doing a tremendous service for Chemistry Students around the world, I will be making a donation as soon as they cut my next Pel-Grant check. Thanks a million, i could not imagine passing my chemistry class without the supplemental help I get from your wonderful videos. Keep up the excellent work!

[dynastywho]

huuuuuuuuuuuuuuuuuuuuuuh

[malubayraymond]

im really confused on how chemguy got the missing "x" in 2:35 when he has only one value given(the Ksp).. sorry, i haven't beefed up my algebra skills. can somebody help?

[enycedoll]

Hi, i don't know if you've still resolved the issue of 'x,' but i just came across your comment and thought I should reply. X is a variable we're using for the unknown concentration. The coefficient in front of X corresponds to the coefficient of the chemical in question. For ex, the coeffeficient in front of Cu is 1 so we use X alone. BrO3 has a coeffeficient of 2 so we use 2X to represent its concentration. Hope this clears things up?

[enycedoll]

Once you plug the numbers into the Ksp expression:

1.5x10^-7 = (X)*(2x)^2

1.5x10^-7=4x^3 divide by 4 on both sides. The number that you get, you have to take the cube root of this number. That's how he solved for the value of X.

[b00tintheface]

its 4x^3 since (x) (2x)^2 breaks into x times 4x^2 then further into 4x^3. when you square the 2x you square both seperately. 2x2 and XtimesX.

[uzbekis23]

hey chemguy i dunno if you read these but Im pretty sure that the equation should be 1.5x10^-7 = 2x^3 not 4x^3. this would make x 0.0042...M.

[bannanaiscool]

Nope. It's 4x cubed. Just check the math again. 2x squared times x!

Chemguy

[sharonalefifi]

@uzbekis23 when multiplying you add the powers, when dividing you subtract the powers..i find this an easier way to remember:)

[chenene91]

I'm glad I found this. I couldn't understand anything when my teacher taught this.

[cl954]

sorry but itz hard to c the values...is it possible u could move the board closer to the camera?

[bannanaiscool]

Check out my new HD clips in stoichiometry and gases. See what you think.

Chemguy

[sweethabakkuk]

wow... i appreciate ye sir for these kind of stuff, i never had this opportunity to enjoy chemistry that much... but as i can see chemistry is a lot cool than i thought it is...

[nosense82]

thank you thank you thank you for making my homework make sense!!

[kaDa909]

1:56 squaaaared! hahaha

[tnesty]

This should be supplemental...after you read your chemistry textbook. This is a great application of something you will read about or a problem you might get in your textbook. Everyone knows you have to read your book first. After watching you have to do problems, many, many problems. Gen chem is all about doing applications, you wont just get it by watching. Thanks for the review. Studying for MCAT and I forgot lots of genchem!

[zoponeer]

u need to be my chem teacher like for real!

[moosemeatman]

thanks for helping me to pass my finals!

[nobodygetsmyusername]

@moosemeatman

You are one lucky student cause I didn't :'(

[paintballa235]

Dude, you rock. thank you so much for this video.

[crazzynesss]

you're excitement about chemistry is amazing

thank you for helping me review!!

[hienizzle]

u are so awesome. ur teaching is the best.

[proudtobeanarab]

how would you find the concentration of cacl2? i found the concentration for each the ca and the cl2 but i need the concentration of cacl2.

[abeshachiqmahlet]

u dont need to nd wont b asked cuz cacl2 is a solid which doesnt dissasociate....

[proudtobeanarab]

thank you!!

[abeshachiqmahlet]

mmhmm

[keemoochee]

you are the awesomest!

[Flaba12345]

...no its not. lol.

[achilis87]

if this is terrible, then my advice to you is to quit trying to study chemistry... go do art or something. lol..

The man is a hell of teacher, and solubility is a hell of a topic!

[zeezooshah]

YES, quit chemistry ...

because if u don't get the wonderful Chem guy's explaination then u won't get it at all. just don't give urself headache.

[bannanaiscool]

Yep.

Chemguy

[Rafeh]

So when you add more concentration , the equilibrium becomes disturbed , and it tries to reach a new equilibrium and at tht time u have to use a Qc(because qc occurs when system is not at equilibrium) and when you have more concentration thn that, your Qc becomes greater thn the Ksp which tends to shift the reaction to the left so Qc decrases and become equall to the Ksp and the system mreaches quilibrium. right? , because Qc is only USED when a reaction is not at equilibrium.

[beenzo]

i agree. that was a good refresher course

[JadenYugiGX]

You are some Unique teacher, LIKE the way you explain, thanks very much !

[oldskooldudette]

thanks a lot.. great help.

[bappul]

this was a great help, thank you

you rock!

[wmnene]

Extremely helpful and easy to understand. Thank you

[Dali123456789]

Thanks u save my life !!!!

i like the way how u explain!!!!

:)

[jhue180]

thank god man thank youfor the video it really helped me cause i don't think me and my teacher click together well thanks man

[jbkffs]

nice helped alot

[gosnia]

Thanks so much, Chemguy! I got a 5 on my AP with your help!

[ddrose272]

oh thanks alot from where can i get the Q value ???

[bannanaiscool]

The Q value is just the initial concentrations placed into the expression!

[ddrose272]

im very very happy coz u replied me :-)

i really admire you and everything u do for us ..

thanks and GOD Bless you

[gaoyipin]

well i learned this in grade 6 back in the olddies..

it seems harder tho ..

[darito90]

aaaaahahaha ur awesome

[boikrazy33]

thats funny cause im in 8th grade, and im learning this!! lol

[mystique7140]

you know what's even funnier? im in college and were learning this!!!lmao

[boikrazy33]

oh my gosh? really?? that's so funny!! well... my school does a TON of college prep stuff, like in 7th grade you start doing research papers, and stuff, so idk why, we just learn a lot of things early!! haha

[ycud]

Hey nice work. Enjoyable :D

I'm an Australian by the way... and I'm studying pharmacy. I'm also tutoring solubility to 1st year students so this is a good video to let them watch.