Thank you so much for this video! It is extremely helpful!! I'm just a bit confused on the last question you did, I substituted in the values where lnk is -6.91 and the temperature is 323 but I got a very different answer to yours (2.84*10^13). Is A meant to be the same regardless of which point I use?
I know this comment was added a year ago, but to anyone else who is thinking the same, this is how it is done. So the bit at the end that says lnK is calculated by putting 1 over the rate constant K, and make sure to ln it eg) ln(1/8.60x10^-5 )will get you 9.36 (this column is always negative, so it will be -9.36). Next to get 1/T, simply look at the Temp column and do the same thing so eg) 1/ 303 to get 0.00330.
I don't know why but I am not getting anywhere near the same values as you for the gradient and activation energy. What sort of range of values would they let you have in an exam?
MaChemGuy thank you so much for replying! Can I get an autograph from you my chemistry teacher adores you, she is always recommending your videos to us, you saved me over lockdown!
MaChemGuy I’m at Norwich high school for girls, she’s called mrs McCourt, she’s from up north so she always says she finds your voice very comforting to listen to!
After all the comment from other teachers and other students and personal experiences I’ve come to the conclusion that this is the best chemistry RUclips channel on RUclips. I’m not even joking my chemistry teacher said she would marry you. Thanks a lot.
MaChemGuy Ah nice!! See i kind of guessed you did both of those as for a chemistry teacher, you teach the maths part of things so exceptionally and for the A-level chemists who dont do maths, you make it so much easy sir! Thank you! And also you mentioned Planks constant in one of your videos. And really? why do you wish you picked a language😂?
The way you teach is absolutely amazing, after so many tries I have finally understood how to use the Arrhenius equation, thank you very much!😃
Great to hear!
Thank you so much for this. I've never understood this but you made it seem so simple! A life-saver, SUBSCRIBED!
Awesome, thank you!
Thank you so much for this - helps a lot!
Wow your timing couldnt have been any better sir, GOOD SHI*
Ryu You're welcome. Been meaning to make it for ages!
GOAT of chemistry 🐐
Thank you, using your videos at the moment to revise and they are very clear and useful. :)
😀
@@MaChemGuy ...But to be honest I really don't get this 😅
@@BluPlays can you do it though?
@@MaChemGuy no not really, to be honest I'm struggling with everything right now
@@BluPlays Sorry to hear that. Have you watched my other Arrhenius videos?
You’ve made it soo easy! Thanks!
This video just helped me so much! thank you and keep it up!
Glad it helped!
Thank you so much for this video! It is extremely helpful!! I'm just a bit confused on the last question you did, I substituted in the values where lnk is -6.91 and the temperature is 323 but I got a very different answer to yours (2.84*10^13). Is A meant to be the same regardless of which point I use?
This was great and amazingly useful. I have liked and subscribed. Thanks a lot for making this video.
You're very welcome. Thanks for getting in touch, it means a lot to hear that the videos help.
Brilliant ...
absolutely amazing sir...
Thank you so much, keep it up!!! Please, Could you go through exam papers???
if you use a different point on the graph you should still get the same answer for A, yes?
You're a life saver.
Great video
Tysm ❤ awesome explanation Subscribed 😊
Hello sir, could you please clarify when do you work out lnA from y-intercept and when do you work out by rearranging the formula?
If the x-axis goes to zero you can use y-intercept otherwise it's the other way
@@MaChemGuy Thank you
how do u find the missing values? just subbing the values in to the lnk equation?
Easier than that - just use your calculator
1/313 and ln(3.35 x 10-3)
Wish I'd said that on the video now :(
Thanks btw - glad you liked it :)
MaChemGuy Thanks for clearing that up :)
How did you calculate the missing values? Did you use the first line to work out Ea then calculate each missing values?
I know this comment was added a year ago, but to anyone else who is thinking the same, this is how it is done. So the bit at the end that says lnK is calculated by putting 1 over the rate constant K, and make sure to ln it eg) ln(1/8.60x10^-5 )will get you 9.36 (this column is always negative, so it will be -9.36). Next to get 1/T, simply look at the Temp column and do the same thing so eg) 1/ 303 to get 0.00330.
cecilia aladore why do I get 2.985.... when I do 1/3.35*10-1?
1/313 to get 1/T
To get ln K: ln (3.35x10-4)
I actually love you - I totally get it FINALLY and can smash every question. THANK YOU INCREDIBLY MUCH!!!!!
I don't know why but I am not getting anywhere near the same values as you for the gradient and activation energy. What sort of range of values would they let you have in an exam?
How did you calculate 1/T /K^-1 ???
Literally 1 divided by the temperature
Thank you!! JS
please explain how you worked out lnk in the table thankyou!!
k is given. Press the ln button on your calculator, then type in the k value, then press =
@@MaChemGuy thankyou so much sir!! Thanks for uploading all these videos as well, life saver!
@@JimJam-ju6vn no worries. Glad they’re helpful
Your amazing omggg!!!
Is it in semilog graph or Cartesian graph? Kindly let me know
awesome vid btw
How can the line touch the Y axis ? Does this mean that 1/T can be zero ?
Sir how to find y intercept because in that case x=0 what will be the temperature then..?
Rate constant calculation??
Hello, I have a question. How did you find the rate constant in your experiment?
Didn't calculate, it was supplied by the question
Help me please how is in K 5.40
Can I solve for Ea without using a graph?
how to calculate K? the rate constant
Can someone please explain how we went from 31.14=ln A to A=e to the power of 31.4
It's the inverse operation
MaChemGuy thank you so much for replying! Can I get an autograph from you my chemistry teacher adores you, she is always recommending your videos to us, you saved me over lockdown!
@@ninmet8073 Haha! What's your school/college and your teacher's name?
MaChemGuy I’m at Norwich high school for girls, she’s called mrs McCourt, she’s from up north so she always says she finds your voice very comforting to listen to!
@@ninmet8073 Right, leave it with me!
How was the missing values workout for for In k - really confused
Press the ln button on your calculator for the two missing k values
they wont really ask us to this @9.18 in a exam though right?
Toby Harris They could do
How do find out the missing value tho it’s getting me stressed and no other video are showing it
Michael O 1/temp for first one and lnk for second one
But how do you work out in k tho
How do you work out in k from rate constant
Michael O Press the ln button on your calculator then type in the rate constant
After all the comment from other teachers and other students and personal experiences I’ve come to the conclusion that this is the best chemistry RUclips channel on RUclips. I’m not even joking my chemistry teacher said she would marry you. Thanks a lot.
thank the lord
ima That’s good then
your videos are QUALITY - I use them even though I do AQA, you have a knack for making chemistry seem bloody enjoyable.
HI James! Just out of curiousity, may i ask what other A-levels you did besides Chemistry?
Usman Mahmood Maths and Physics. In hindsight I wish I’d done French and Spanish!
MaChemGuy Ah nice!! See i kind of guessed you did both of those as for a chemistry teacher, you teach the maths part of things so exceptionally and for the A-level chemists who dont do maths, you make it so much easy sir! Thank you! And also you mentioned Planks constant in one of your videos. And really? why do you wish you picked a language😂?
How do you figure out the scales on the x and y-axes sir? I am still not so sure.
They usually do them for you. All you need to do is plot the points