Arrhenius Plots 

Just wanted to say, I'm an A2 student (OCR) and need an A for uni. Thank you so much for doing these videos and putting in such effort. Honestly you are an amazing teacher, you make things simple to understand whilst making sure we understand why and how it works as well as just being able to do it which is really important for remembering in exams. So thank you so much. You make this so understandable in 14 minutes when at college I was struggling for 2 hours! Amazing teaching skills.

so much clearer than the text books/revision guides. THANKS!!!!!!

Was so confused on this in class, you really have a great way of explaining tricky topics in a short amount of time very clearly and concisely :) This channel is a lifesaver, thank you so much!

watching on the day of my exam. I wish I had found this sooner 😖😫

just warching 43 min before my exam. thank you

Thank you so so much this really helped me - I'm not a maths student and struggled with this concept. This clearly explained it to me and I finally get it!

Thank you so much for this video you don't understand how easy you made this to understand I am so glad I found ur channel and I cannot wait to donate and listen to your podcasts

Thank you so much for these videos; you honestly help out so many people including myself.

i didn't think I will ever understand this graph :) but your video is making a MASSIVE difference- thank you so much!! :'))))

Definitely the hardest part of A level Chemistry imo

Cannot thank you enough for this video you’ve explained it so well!!!

Thank you so much, your videos are such a help!!

I'm doing the A2 specification for Edexcel and you have clearly explained all of the points we need to know for our unit 4 exam. THANK YOU SO MUCH!

I think you are brilliant Allery. I have to teach this and now I feel more confident explaining this to my students. Thank you

Thank you very much for this!! very well explained and taught!! my understanding of this is so much better!! thanks once again

Thank you so so much. My friend told me about u. I understnd this so much now and it looked really complicated so i left it to the last min.

Okay this was AMAZING!! U were born to teach

Mans got such a cute smile 😊

Thank you so much for your help! You're amazing.

You are brilliant, you make much more sense than my teacher

paper 3 tomorrow chemistry A I was shocked how it was on paper 1 8 marks in total just on this split in 2 sections. Everything I didn't want coming up all came u- on a positive note I really appreciate your videos n I truly feel u don't get enough credit!!!! thank you

when i got that big number for lnA i thought my calculator was just broken and was trying to fix it, until i unpaused the video and realised that was the correct answer

THANK YOU SO MUCH SUCH A GREAT HELP

Amazing explanation 👏 thanks

You are a life saver !!!!! Thank you so much

Couldn't have come at a better time! First test on Thursday

Great video.Thank you so much

Really helpful thanks so much!

This video is excellent! I have got full marks on my exam question, eventhough I'm not a maths student, I just followed the steps.

So beyond useful!!

We are doing these next! Starting it thursday woo thank you xx

wow this is great thank you so much

Really helpful, thank you 😊

I have a question. When calculating A doesn't the section in brackets have to be multiplied by -1 as it is -(Ea/RT) ? As before, when you calculated Ea you did - (-11,000 x 8.31).

thank you for being a hero

Thank you sooooo much!!!!!!!

how do you work out the units for A?

Thank you. May I ask how to best convert the Arrhenius equation to solve for (or predict) 't' from the increase of carbon? Similar to Arrhenius' original predictions.

Just wondering that when you rearrange for Ea from -Ea/R= gradient why does the minus in front of the Ea not become positive so Ea = +(-11,000x8.31)?

Thank you very much..🖤

are the units for A dm^3mol^-1s^-1 (time stop in video is 13:49) or moldm^-3s^1? This was such a great video! I am currently revising for my year 13 mocks, so thank you!!!

Hi, was wondering if you could cover the specification point for AQA on defining the terms order of a reaction and defining the rate constant. Just comment this back to me pls. I understand all the calculations and how to deduce the rate equation, but I’m not sure how to actually define these if asked.

Hi I was just wondering why in the part for the calculation of the activation energy you put.......... - (-11,300x8.31) whereas you didn’t put a minus in front of the bracket in the calculation for A? Why wouldn’t it be -4= -(-1.1/0.1x10^3)? Sorry if it’s a silly question! Thanks for the really helpful video

just wanted to say that the units for A are the same as the units for K

Ur are the best ❤

How did you get those units for A? (or is that a stupid question..)

Hello, once we know the value of A and the gradient, we could technically plot the graph, right?

Thanks

Hi :) If we calculate A from a point on the graph, A is dependent on temperature, so wouldn't we get a different value of A from each of the three points (because of the different temperatures)? And when I use the actual y intercept to get A, I get a different value altogether. If we extrapolate your line back to the y intercept, it would be something like -3, so e^(-3) = 0.050 I'm probably missing something obvious. Help, I'm confused haha

Hi Chris, you explained this really well, thank you? To work out the arrhenius constant if the straight line touched the y-axis could you just get lnA like that?

Legend

Why is the unit dm3mol-s- at the end?

Hiya! I was just wondering.. You know the last example in this video? It's so much more complex than the only one in my textbook.. And another textbook for the same spec doesn't have arrhenius at all! So where did you find this/do you have anymore/ did you make it up? And do you know if the AQA spec this year requires this difficulty of question because we can't find any hard examples more complex than rearranging. No gradient working out etc. 😕 thank you so much if you can help xx

there is another way to calculate A because its the y intercept if the line is extrapolated u can get a figure of A on the y-axis however the risk is if you are a decimal off, the result is a complete different answer

Don,t we need to determine the value of k constant first to move forward to plote ln(k) on Y-axis and 1/T on x-axis. How to determine the value of ln k, when we don,t have value of k?

Just wanted to ask is this for AQA

Was just wondering, do the exams give us both the original and the simplified Arrhenius Equations?

you're the best

So it does not matter which constant and temperature you choose when calculating the Arrhenius equation?

I want know how to convert from Differential scanning calorimetery graph into Arrhenius graph

Can u zoom into the board a bit please

Also how did you know the units for A? Thank you

Stupid question- is 1/t time or temperature? If it’s time, where does the temperature part fit into all of this?

THANKS just saying!!!!!

is the formula given in the exam?

Hi I think I get it mostly but when you worked out Ea you did -Ea/R but what happened to the T I thought it should be -Ea/RT... I think the T was the 3.1?

how was ln(K) value found? I'm guessing experimentally and then ln( 1/time)

good timing for this video lol

why is k proportional to 1/t.

Anyone watching just before 2019 exams???

This video for not clear