GCSE Chemistry - Le Chatelier's Principle #50 (Higher Tier)

[@Cognitoedu]

If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

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ur a legend, the pandemic disrupted our education so much this year and probably next year which is my GCSE year. u literally saved me!

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[@walaahussein2932]

THANK YOU SO MUCH THIS WAS SO SIMPLE TO UNDERSTAND!! I HAVE AN EXAM TOMOROW AND WAS FREAKING OUT SO THANK YOU THANK YOU!

[@Cognitoedu]

THANK YOU FOR WATCHING WALAA! glad you found it helpful 😊

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[@Cognitoedu]

Hey thanks for such a nice comment! Really happy to hear they’re helping you learn - good luck with all your work 🙌

[@relyt9518]

Really nicely laid out and explained! Thanks a lot:)

[@Cognitoedu]

Hey Reylt, really glad you found it helpful! Thanks for the comment too! (It really helps the videos to be seen :))

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[@sidra4369]

Your a legend I missed like 2 lessons in class and they were about reversible reactions and Le chatelier’s principle and I didn’t understand a thing , but with your videos everything is just made so clear , easy and simple to understand . Thanks

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I use your channel for priming all the time and its been helping me throughout my entire gcse so far. Thank you so much!!

[@credidimuscaritati]

Cognito is literally my favourite channel for Maths, Chem and Bio... Thank you for everything!!! I tell everyone about you guys 🥰

[@fatihahwahida8123]

this is my first time understanding this principle after watching lots of videos about it. Great and very recommended video

[@faroukhamdan809]

Thank you soooooo much actually the first video that helped me with this topic

[@Cognitoedu]

Hey guys thanks for the lovely feedback! Really happy to hear it helped you out 🥳

[@whatisthecoronavirus8133]

Your videos are as good as a person who's on top and you explain all the structures very clearly thanks

[@human33258]

something I couldn't understand In 2 years has been cleared out in 4 minutes. Thanks bro !

[@mariamahmed593]

really helpful especially with my second wave of paper 2 mocks coming soon. I was struggling with understanding the concept but this has made it so much easier now its time to seal the knowledge for the real gcses👍

[@farshidislam1053]

Tomorrow i have exam on whole unit 3 and your videos just saved my day. Great way to revise quickly

[@omaral-asaad6407]

Thank you so much for what you do, it is very helpful for me and this made me understand the principle even more❤️❤️❤️❤️

[@nnodimojukwu5941]

It really worked wonders for my exam. Thanks a lot

[@qiqi2062]

Thank you so so much, I was really confused about how temperature affects the position of equilibrium before watching your video. I truly appreciate everything your team Cognito does. Thank you ones again.

[@Cognitoedu]

Thanks Qi Qi comments like this make it worth it!!

[@lemonseana]

literally was so confused about this topic and this video cleared all my doubts. thanks!!

[@ImranAli-ik9uz]

same 😅

[@ryivera]

a few years later, still helpful, i will be using these videos for my mocks so thank you

[@shaguftamahmood4173]

someone who can actually explain this topic tysm!

[@donthesecond5418]

Thank you for explaining this very clear and concisely. Because of online classes, only reading my handouts makes it more confusing than it actually is.

[@Cognitoedu]

Glad we could help you out Don! 😊

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I was just doing some exam questions and I got stuck; I just didn't get it - I watch your video and immediately I understand. Thank You so much.

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thank you so much, I was having huge trouble understanding this topic, but you managed make me understand it all in a 4 minute video! Thank you so much!

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I have my finals tomorrow and it's covering the entire IGCSE syllabus - all the way from states of matter to experimental techniques. Needless to say, I was feeling extremely stressed but this video helped me so much, THANK YOU!!

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Thank you sooo much this was the one topic i have been struggling on for the past month and i finally understand

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Your Explanation is too perfect ✨️👍👏

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I did find this helpful thank you very much

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You just explained that waaaaay better than my teacher

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This really helped me to understand the concept! Thanks for the amazing vid !

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I have never understood this topic and now I finally do!!

[@Cognitoedu]

Yay that's great to hear Aniela!

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I finnally understand this thanks to your well explained video. Keep up the good work!

[@eesamahmood7928]

1:29 is wrong when energy is released the amount of energy increases not decrease?

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He is a legend I was having problems with this and it got cleared

[@flamexc]

This helped me understand the concept as a whole as prior to this I had the wrong idea of what Le Chatelier's principle was.

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lmao this is the first video that made sense and the tutor didnt sound annoying. thnx

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for some reason i find myself to not be asked to revise for chem paper 2 tomorrow

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Very helpful for my homework, love your videos and use them often.

[@henry8433]

I'm a bit confused as to why that when you decrease temperature the counteracting change is an exothermic reaction which surely would mean it is losing even more heat rather than counteracting the temperature decrease. Other than that this was really helpful!

[@rabiasultan4096]

See i shall elaborate the reaction of So2 and O2 gives out So3 AND heat, Forward reaction : 2SO2 + O2 -> 2SO3 + heat Which means forward reaction gives out heat (exothermic) while forming product , and reverse reaction NEEDS heat ( endothermic ) to reform the reactants Reverse reaction :2SO3 + HEAT -> 2SO2 + O2 So if i decrease the temperature of the system SO3 will no longer have enough heat to reform the SO2 and O2 . And so the equilibrium shifts to forward reaction to resist the change occuring in reverse reaction

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Youre amazing thank you!! I understand it so much more now :)

[@LafihaMishra-bq7so]

SAVED. MY. LIFE. ABSOLUTELY.

[@vuyooooo_]

Thank you so much! I understand completely now

[@Cognitoedu]

Glad the video helped! 👍

[@boofang10]

Well explained !! Simple & straightforward 😁👍🏻👍🏻

[@Cognitoedu]

Glad you liked it!

[@norahbuta8867]

for the concentration: how can more ammonia be produced if the level of hydrogen is not increased as well? surely the hydrogen would be the limiting reactant right??

[@chery_759]

If the temperature increases surely according to the Le Chatelier's principle, wouldn't the exothermic reaction be favoured to get counteract the increase of heat (since exo is heat exiting the system) so it decreases it back down to the normal tempt? since endo thermic means heat is being taken so it would just keep increasing the temperature instead????

[@Cognitoedu]

Hi Rizza! When we say system, we don't necessarily mean just the chemcals, it could be the water of a beaker or air of a container. So if you imagine we were doing the reaction in a beaker of water... when we heat up the water, the equilibrium of our reaction shifts in the endothermic direction, as that will take in heat energy from the water and so cools the beaker of water back down. Hope that helps! :)

[@chery_759]

Cognito Thanks! I get it now - received this luckily a day or two before my Chemistry GCSE 😅👍

[@aanchalsharma8481]

Thankyou so much it really helped me to understand.

[@Cognitoedu]

You're very welcome! Thanks for the comment too! It really helps the videos to be seen :)

[@risingpheonix8127]

I was literally about to cry yesterday in class when we did this topic cause I wasn't understanding 😭this help so much🙏🙏🙏

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[@Aethelhadas]

I have a question. Can Le Chatelier's principle also be called "Factors affecting equilibrium"?

[@Cognitoedu]

Yes it certainly can! That would be much easier :)

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U5 Chemistry like this video! 🥑

[@siames3cat]

hi. for your last video on equilibrium, you said that heat encourages forward reaction, of equilibrium moves to the right, however, here you say that equilibrium moved to the right when temperature is decreased, which completely counteracts the previous statement? im a bit confused and would appreciate if you could answer my question before my exam tomorrow

[@abigailk6500]

the forward reaction reaction isn’t alwyas guarenteed endothermic, in different reactions the forward reaction can be exothermic

[@abigailk6500]

ans also if u watch the video 1:20 u can clearly see he states why it is exothermic since it is a negative

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the satisfaction when hearing "Aaand that's it for now! Cheers for watching.." after 4 minutes of understanding "ohh!"s 🤌🏼

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[@Cognitoedu]

Thanks Aoìfe, it's definitely something we'll look at for the future

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ap chem student here! thank you for saving me!

[@deez-kun]

Thanks man I literally have a test in 1 hour

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Great video

[@darren3192]

Very helpful, put all 3 of freescience lessons into 1 vid aswell as explaining la chateliers principle

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you are the goat

[@xyz-pk3kj]

Thank you for your video. However, I am a bit confused about the shifting of equilibrium. Wouldn't the equilibrium constant change if the equilibrium position shift?( Eg. If the equilibrium position shifts right, the denominator is larger, equilibrium constant is larger too) thanks 🙏

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[@mydogiscute579]

i was able to understand most of the theory in this but i further want to learn, how does the particles in pressure balance out when changed ik when there is higher pressure the equillibrium goes to the lesser moles but why?? van u explain?

[@emi-ilyth]

it moves to the lesser moles of gas to try to revert the conditions to how they were before. (you have increased the pressure so u need less moles of gas to decrease the pressure back to what it was already)

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Was helpful

[@TheHHPodcast]

you explain things so well !!!

[@lordespion8789]

What will happen if the Number of molecules are the same? Like A + B ----> AB. What effect would changing pressure would do in this case?

[@pastychomper4939]

If it was all gas molecules on both sides then changing the pressure wouldn't affect the equilibrium (but it might affect the time taken to reach equilibrium). Btw sorry to nit-pick but 'A+B' looks like more molecules than 'AB'.

[@BobMarley-yz4wh]

Thanks. Really helped

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Thank you, Helped out a lot!

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Tysm! You helped me sooooo much. 👍

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I thought that I was going to fail my chemistry exam but I actually got a grade 9

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this was really helpful!

[@Cognitoedu]

That’s great to hear! Really happy it could help 🙌

[@Funny_frenzy48]

how did you summarize 270 mins of chem class in almost 4 mins

[@thedeltastrat]

Hey dunno if you'll see this, but does this mean that each reversible reaction in a closed system will have a constant pressure and temperature it will always be at? As say the temperature is A when the equilibrium is in the centre, then you increase the temperature - the reaction shifts along the endothermic route, decreasing the temperature back down again. So the temperature has remained constant, your increase in temperature didn't really increase the temperature, as that was counteracted, but rather increase the concentration of the endothermic product?

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My teacher have a good taste of videos for us lol

[@rebeccachong1218]

nice! just curiuos what is the example of le chatelier's principle in home cooking?

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Well explained!

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Great to hear - thank you for the support!!

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