AQA 1.9 Rate Equations REVISION

[@mikeyedwards6250]

Mate, you are dragging me through my adult access course almost single handed. I don't know how anyone passed chemistry before you started making videos.

[@AlleryChemistry]

No problem at all, good luck with your course!

[@moonlightmando7163]

Using your videos to revise for my unit 4 mock. I used them for my Jan exam (unit 3) and did well! Thank you.

[@AlleryChemistry]

Great stuff. Well done 👏

[@eesaf7969]

This man is the sole reason I feel confident for my exams. Thank you again Sir.

[@adailyfact]

What grade did you end up getting?

[@calisthenicsultan]

Your revision videos are a cheat code, they make everything seem so easy

[@AlleryChemistry]

Thanks!

[@milanxoxoxo]

you’ve helped me so much throughout these 2 years so grateful for your channel I’ve told all my friends about you because you’re so amazing xoxoxox

[@AlleryChemistry]

Thanks for your kind words. All the best for the future. 👍

[@revision7685]

can't wait to shout bingo in my chemistry a level tomorrow when i find the rate determining step🙌

[@AlleryChemistry]

😄 BINGO.... It's step 2.

[@KJR-vh3rh]

You have helped me so much in the days leading up to my exam. you did everything chronologically and it has helped me understand better than my lecturers have taught the subject. Thank you so much never stop making these videos!!!!!!!!!!!!

[@gigiadwan8989]

MY FAVOURITE KZbin CHANNEL. THANK YOU MR CHRIS HARRIS

[@ioannispanteli9151]

LEGEND...highly recommend you watch these vids if u do aqa chem...makes everything so simple. Chemistry bingo ! I love it thank you sir

[@angelononiba827]

Thank you I don’t know what I would’ve done without you honestly😭👍🏾

[@AlleryChemistry]

No problem 😊

[@adailyfact]

what did you get in your a levels?

[@lengmanmgrittz4805]

Allery is the greatest chemistry KZbinr Fr. Thanks 🙏🏾

[@elliesmith7518]

Thank you for not assuming we all do A level maths, I do bi, chem, geog, im in y2 and really struggle with the maths topics in all 3 as I am in lessons where the majority of the class do A level maths. - it's appreciated

[@AlleryChemistry]

No problem at all!

[@samkat8410]

Same i do bio chem and art but like 95% of my class does maths and its so annoying cuz i hate maths sm 😭

[@theiviyap7883]

This has been so helpful, covering challenges but also more straightforward aspects of this topic! Thank you!

[@AlleryChemistry]

No problem, you're welcome!

[@otherworldlydreams4854]

heya bit confused at 23:22 because you said that the initial rate has also quadrupled by 4, but 0.63x4= 2.52 not 2.58? i’m confused

[@Ganothic]

2.52 is close enough to 2.58

[@pokaxxontass]

I love your videos and keep watching them.These videos are so valuable and help me so much.Thank you teacher.You are legend!

[@AlleryChemistry]

Thank you! 😃

[@mrmoleculeg3564]

I full on loved your joke fr, the aRRhenius equation 😂😂

[@aaliyahpatel2819]

such a huge help. Thank you! these videos are lifesavers!

[@AlleryChemistry]

You are so welcome!

[@SpiderkingG]

GOOD LUCK for paper 2. hope it's like paper 1 🔥🔥🔥

[@Dz-nn9gt]

what grade did you get

[@nai.7547]

THIS IS BRILLIANT i loveu mr allery chemistry man I finally get it

[@laurenm7832]

...Sir - I did laugh about your ARRRhenius equation joke 🤣🤣

[@comfychronicles]

*-*

[@ik5377]

🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣

[@harshnair9055]

This was really helpful!! I feel quite confident with this topic now :)) Thank you!!!

[@AlleryChemistry]

You're so welcome!

[@finnerz9200]

hi sir, for the calibration curve, would this only work if one of the reactants was colourless since we would only be measuring the colour change of the thing it is reacting with (the plotted reactant) . If we had two coloured reactants surely the calibration curve would be useless since the other reactant could be affecting the colour of the plotted chemical? Sorry if this isnt clear and thanks for the vid as usual.

[@halinamatour4503]

best chemistry teacher out there😊😊😊😊😊

[@Aya-zt2xg]

at 31:22 how did you get the rate due to change [A] only to be 15.1x 10^-3 moldm-3s-1??? i am trying to work it out but dont understand. please can you explain :) love your videos btw, very helpful. i have resits soon so this is perfect

[@SinCosTanha]

Hi do u still need this question answered?

[@genericcommenter1267]

4 months too late but because A is second order, when the concentration of it doubles from 0.45 to 0.9, the rate should quadruple since multiplying by 2 squared is equal to multiplying by 4. So the change just due to A alone would be 3.78x10^-3 x 4= 15.12x^-3.

[@zxinn1145]

@@genericcommenter1267 when I do that I get 1.512x10^-2

[@lemon3387]

@@zxinn1145 its the same thing but in the video they put all the rates to 10^-3 so instead of 1.512x10^-2 it would be 15.12x10^-3

[@carlito6038]

E on a calculator does NOT stand for exponential. It’s an irrational number around 2

[@aliciab385]

"not too traumatic" 🤣

[@nenfalubuk5702]

this is very interesting indeed i am helped by this video

[@AlleryChemistry]

Glad it helped

[@cardboardxbox9831]

Hi, I was wondering about the units at 18:34 being mol-1dm3s-1 as I've also seen in examples of the same question with the units being dm3mol-1s-1 in a text book or is there no difference ?

[@redu0756]

It's the same thing but I'd write Mol first

[@biib6318]

do it the order allery did it cause that's how it's written in mark schemes and good luck for Tuesday!!

[@Gamerayaan162]

No diff

[@themanzu8186]

There is no difference

[@xbabzi]

at 19:30 you've said 1.0 is the x value, but the line only reaches 0.8?

[@puddleduck1405]

yeah that's what I was thinking too

[@bz4514]

at 50:10, does it mean that because step 2 is the slowest step, any steps beyond that are not considered in the rate equation?

[@lh8474]

no since altering concentration of the reactants in the other steps will still affect the overall rate :)

[@sarahibrahmi]

yes no steps after the slow step (rate determining step) are considered in the rate equation

[@caledooniya941]

Hi sir, do we need to memorise the Iodine clock reaction? It's fairly limited in the AQA spec.

[@samkat8410]

I think u shud know it cuz ive seen similar qs

[@catherine4690]

If your victoria sponge is taking 1hr 30 to bake in the oven, something's going wrong... :O

[@AlleryChemistry]

Ha! I like a cremated sponge!

[@sassysundays6366]

I love you.

[@leonachang4694]

Thanks for the video! at 56:30 you mention that as Ea gets smaller k gets bigger. I tried this on a calculator but this is only true when you ignore the - on the Ea. am I right?

[@aryanattri7252]

8 months late, but yeah; the power of 'e' needs to be negative. Think about it this way: The smaller the value of Ea, the less negative the value of e becomes, which thereby makes it bigger.

[@Michael28pc]

53:00

[@gaanavmanyam9214]

For AQA, will we be expected to write the mechanism reaction for Rate determining step? So will they give reaction and rate equation, and ask us to deduce a 2 step mechanism for example?

[@hdieboen3369]

Is there a ocr A rate of equations video?

[@i_am_gods_child]

brilliant video, subscribing!!

[@AlleryChemistry]

Awesome, thank you!

[@allyphil826]

thank you so much:)))

[@DhyanaRajkumar]

I think there was an error in initial rate equation - change in x

[@sussybaka8605]

im cooked

[@Dz-nn9gt]

what u get

[@omshivakotkar8117]

Thanks sir

[@sashaparis04]

Love me some Victoria sponge cake

[@sandymaison4463]

cant go wrong with a victoria sponge

[@Zen_Zen_Zense]

55:17 bahaha

[@Luca_Talis]

*Pirates of the Caribbean theme plays*

[@fiya4444]

😟😟