Hi can you please explain why when you moved ln A from the righthand side to the lefthand side, and did the inverse and minused ln A from both side you the put it before ln k and not after ln k( you did ln A - ln k) i thought that when you minus something from both sides you would then say ln k - ln A = -Ea/RT. (instead of ln A - ln k= -Ea/RT) Thank you so much for your video though i could find anywhere anything useful about this.
Hi. In the 2nd question. You've rounded too early at the 6.69 part, so your answer should've been 801 s-1. I'm not sure if you can change it or it makes much of a difference in the mark scheme, but I thought I should let you know. I really appreciate the videos though, they're great
Hi for these calculations in your video I used the non- ln form of Arrhenius to get the values asked for - I got very similar numbers so first of all how come I'm not getting the same numbers? And is it fine to use the non- ln form to work out the values? Thanks
Hi, I've simply deleted the video for now. The whole issue stems from me not stating at the start of the other video that I was going to answer it by explaining where the numbers were coming, from rather than calculating k first. There is a rates question on the specimen paper for the new A level exam (OCR) where to gain full marks, students have to fully explain their answer in a clear logical way. I really don't want any of my videos to cause any confusion and at the end of the day we simply don't know yet how they will be marked. For that reason, I'd rather the video wasn't there. If you think it's worth re-posting but with a clearer intro, I'll put it back on (I think all the comments may be lost though?) Please let me know what you think. Thanks for your initial comments by the way, they certainly taught me a lesson in the importance of being clearer. Thanks also for getting back in touch and please continue to comment :)
Rubavani Thevarajah Thanks for that. I might make a separate one for the other way. Students can decide which they prefer. Will be clearer next time. Good luck with the exams in the summer!
Very helpful, thanks for this. Can you recommend a source that has other calculations like this one?
Hi can you please explain why when you moved ln A from the righthand side to the lefthand side, and did the inverse and minused ln A from both side you the put it before
ln k and not after ln k( you did ln A - ln k) i thought that when you minus something from both sides you would then say ln k - ln A = -Ea/RT. (instead of ln A - ln k= -Ea/RT)
Thank you so much for your video though i could find anywhere anything useful about this.
Beautiful. Thank you
Hi. In the 2nd question. You've rounded too early at the 6.69 part, so your answer should've been 801 s-1. I'm not sure if you can change it or it makes much of a difference in the mark scheme, but I thought I should let you know. I really appreciate the videos though, they're great
Tsion Legesse Thanks for that 😊
I know Im kinda randomly asking but does anyone know a good site to watch newly released movies online?
@@gabrieljohnny7237 soap2day is a really good one!!
How do you calculate e^6.69 on the calculator?
Hi for these calculations in your video I used the non- ln form of Arrhenius to get the values asked for - I got very similar numbers so first of all how come I'm not getting the same numbers? And is it fine to use the non- ln form to work out the values?
Thanks
Yeah i had the same problem for the second question i got 801
Khaled Jama I got 801 as well , but Ik why he got 804 BC just before he did the inverse of lnA (which is e) he rounded the number up to 6.69
For the first question when you multiplied 5678.5 by -31.72 you got 180131.6 but I got -180122.02 on my calculator.
As it was -Ea/RT he multiplied by -RT so therefore -31.72 x -5678.5 to give him the value 180131.6 = Ea. Hope this helps.
Thank you so much!
thank u dude
How you calculated e^6.69
I think what you're asking he explains right at the end of the video, if that's not what you're asking then you must have calculated the values wrong.
Thank you thank you
How can i calculat gasconstant?
it given to you on the data sheet
Why did you block me from commenting on your other video?
Hi, I've simply deleted the video for now. The whole issue stems from me not stating at the start of the other video that I was going to answer it by explaining where the numbers were coming, from rather than calculating k first. There is a rates question on the specimen paper for the new A level exam (OCR) where to gain full marks, students have to fully explain their answer in a clear logical way. I really don't want any of my videos to cause any confusion and at the end of the day we simply don't know yet how they will be marked. For that reason, I'd rather the video wasn't there. If you think it's worth re-posting but with a clearer intro, I'll put it back on (I think all the comments may be lost though?) Please let me know what you think. Thanks for your initial comments by the way, they certainly taught me a lesson in the importance of being clearer. Thanks also for getting back in touch and please continue to comment :)
MaChemGuy it was a good video maybe you could've just added or you could do it this way...
Rubavani Thevarajah Thanks for that. I might make a separate one for the other way. Students can decide which they prefer. Will be clearer next time. Good luck with the exams in the summer!
MaChemGuy aw thanks btw I think my chemistry teacher is your biggest fan! XD Shes always promoting you!
Rubavani Thevarajah Really??? Glad we're all sorted!
" Arrhenius Calculations" skips steps... c'mon man.
Thanks 😊