Mr. Jeremy you are genuinely the best chemistry teacher in youtube and I'd argue in real life too!!! Thank you so much for the amazing videos. I have a quick question if you don't mind. Do I have to write the Equilibirum constant using scientific notation or would I still get full credit for writing it as 0.04. I am referring to the last question.
Thanks so much for your kind words! Comments like yours motivate me to keep making videos. As to your question, you can write the equilibrium constant using scientific notation or regular notation; just be careful on the sig figs either way.
In the question, it tells us that the only substance in the flask at the beginning of the reaction is IBr. So we know its concentration; it's not unknown. Our unknown is: by how much did the IBr (as well as I2 and Br2) change over the course of the reaction. That's why we put the 2x and x in the positions we did. Thanks for watching!
Thanks for a great vid Mr. Krug! Just one small question: for the last problem, should the final answer be in 3 sigfigs since that's what is given in the og question values? how much do they matter on the AP exam? Thank you again sir
You are correct; there should be 3 sig figs in the answer. Generally, as long as you are within one of the correct number of sig figs, you'll get full credit on the AP exam. Good catch!
Since the 'reactants' in that problem are starting at 0 molar, they have to increase, since you can't have a negative molarity. Because of that, the other side, the 'product' side, has to decrease by 2x because of the coefficient.
Mr. Jeremy you are genuinely the best chemistry teacher in youtube and I'd argue in real life too!!! Thank you so much for the amazing videos. I have a quick question if you don't mind. Do I have to write the Equilibirum constant using scientific notation or would I still get full credit for writing it as 0.04. I am referring to the last question.
Thanks so much for your kind words! Comments like yours motivate me to keep making videos. As to your question, you can write the equilibrium constant using scientific notation or regular notation; just be careful on the sig figs either way.
I am glad i was able to motivate you! Thank you so much for answering my question!@@JeremyKrug
This is so helpful!! Thank you!!
You're welcome, Best wishes making it through equilibrium!
Thank you for the amazing content. The ICE method is great
You're very welcome! I've found that using an ICE box really helps to organize data and get a clear answer every time. Thanks for watching!
these help so much
I'm so glad you find my videos helpful!
for ex problem number two why did we plugged X in for IBr at the bottom rather than the top of the equation?
In the question, it tells us that the only substance in the flask at the beginning of the reaction is IBr. So we know its concentration; it's not unknown. Our unknown is: by how much did the IBr (as well as I2 and Br2) change over the course of the reaction. That's why we put the 2x and x in the positions we did. Thanks for watching!
hi this is so helpful! tysm! but how do you determine the sign (+/-) of the C in the ICE chart?
Whichever side has a zero at the initial state will have to go up from there, so that side has to be the +. The other side has to go down.
Thanks for a great vid Mr. Krug! Just one small question: for the last problem, should the final answer be in 3 sigfigs since that's what is given in the og question values? how much do they matter on the AP exam? Thank you again sir
You are correct; there should be 3 sig figs in the answer. Generally, as long as you are within one of the correct number of sig figs, you'll get full credit on the AP exam. Good catch!
wait why are the reactants gaining x, shouldn't they be decreasing since they're reactants for the second problem>
Since the 'reactants' in that problem are starting at 0 molar, they have to increase, since you can't have a negative molarity. Because of that, the other side, the 'product' side, has to decrease by 2x because of the coefficient.
This is actually too much for me to take in 😓😨
There's a lot here, do what you can before the exam tomorrow, but don't get overloaded.
bless