GCSE Chemistry - Reversible Reactions and Equilibrium #49

This video covers the following
- The difference between a normal reaction and a reversible reaction
- What is meant by 'equilibrium'
- What is meant by the 'position of equilibrium'

[@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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me trying to learn all this before my mocks in two hours:

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[@anashaikh2272]

Frrr hope tmrw goes well

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Same exam in like 2 hr and i am learning important things now

[@biyapoo]

revising for my test tomorrow on rate of reactions, reversible reactions, equilibrium and la chatelier's principle. wish me luck..

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How was ur exam?

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Grade 9 right

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Day before gcses revision 🙏🙏

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Haha thank you mate really happy to hear the videos are helping. Good luck with all your work 🙌

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Only 2020 chem kids will remember this

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in*

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shoutout mr stines first period.

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I was assigned this video so yeah

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Watching this during the Coronavirus lockdown

[@anna2470]

still am

[@joelgriffin9302]

still am

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thank you the visual presentation and the overall explanation made it very easy to understand

[@abdullahahmed3843]

Exams in May, dragging my arse off. It's confusing

[@daava9700]

00:08 Reversible reactions and equilibrium 00:53 Ammonia and hydrogen chloride can combine to form ammonium chloride in a reversible reaction. 01:38 At equilibrium, the forward and backward reactions occur at the same speed. 02:23 Concentrations of reactants and products at equilibrium can vary. 03:06 The position of equilibrium can change depending on the conditions. 03:48 Reversible reactions reach equilibrium in a closed environment. 04:32 Heating hydrated copper sulfate drives the reaction to the right, evaporating off the water 05:14 Reversible reactions and equilibrium

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anyone else struggling to cram this in for the next day exam? me too

[@fake_in_world2635]

Meee

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Ur 6 mins video made me understand what my teacher explained in many classes Thxx a lot it was extremely helpful

[@strawberryslice]

ngl my chemistry teacher moves way too quickly to the point where you cannot sometimes grasp the information at hand but this video helped significantly thanks!

[@martas3144]

One arrow to the right=one way reaction Double arrow=reversible reaction Happen at different rates(below) ""Backward reaction"Forward reaction" Equilibrium= both of the reactions occur, but cancel each other out. Here the reactions happen at the same rate. In equilibrium, the concentrations of the reactant and products stay the same but they are not equal to each other. The positions of the equilibrium can change. If we cool down the reaction, the line of equilibruim goes to the left because there are more reactants than products Exothermic in one direction, endothermic in the other direction No compounds can escape from the reaction because then the reaction would never reach equilibrium, so there is a closed system

[@aditijain3516]

Your videos are great!!! I have my half-semester now after 2 days, which helped me understand the whole concept. thanks a lot!!!!.🙂🙂💯👍👍👍. Great work guys...

[@user-ii9it6jm3o]

My entire lecture of reversible reactions and Equalibrium that lasted for 40 mins, in a simple and fun-to-learn 6 mins video. Thanks so much! 😊

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You explained good, really appreciated!

[@tejaschanchal763]

Thank you for your videos. I found your method of explaining easy to understand and the syllabus is well covered. Good luck for the math videos, I will be waiting :)

[@Cognitoedu]

Thanks Tejas, glad the videos are working for you 👍

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May 2020 exams sure will be hard :/

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Nourallah Mourad what exams, the world is in lockdown! 😂

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Sorry

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Thankyou so much once again a fantastic explanation and great video!!!

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Thank you so much for this, i didn't understand one of what my teacher taught me but here I understood everything, i won't fail today, thank you so much!!

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I literally got 49/50 on my quiz. THANKS YOU SO MUCH 😘😘😘😘😘

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thank you so much for this video ! this helped me so much to understand this topic , have a great day ❤

[@Tera_Trix]

i have my mock tmrw and because of this video i understood. Many thanks

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Great work, as always

[@asimiakhuiniaugustina-ki9gu]

Me literally trying to store this inky memory before tomorrow's test. Thanks a lot your channel has been really helpful with all my topics

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Thank you, this is very nice and helpful

[@ravish3028]

Good luck to all who r facing the examination tomorrow

[@lcharkie]

u too pal

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Hi make sure that bold text and topics in the spec are only asked in paper 2

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I swear to God that you are a chemistry legend

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your the only reason that i pass chem

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Fantastic explanation

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my school has decided to put this in a year 9 test... so this is just me trying to understand how it works rapidly the night before 😬

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no cause literally same w me rn

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cramming for gcses (learning instead of studying) have faith tho bc i got 7 in my mocks with 0 revision.

[@shoneappuhamy5165]

Sir, how does it effect the equilibrium position when the pressure is increased but in this case it the reversible thermal decomposition of calcium carbonate, where you get calcium oxide and carbon dioxide, does that mean increasing pressure make it move in the direction of making calcium carbonate or is there no change?

[@ruoyuxu6918]

1. The equilibrium occurs when the rates of forward and reverse reaction are the same, and the concentration remains the same. 2. The reaction happens in a closed system 3. Dynamic never stops

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Thank you sir it is really healpfull 👍👍👍

[@Mr.INDIA_08]

Nice video for students 👍

[@aymannasib6320]

I have my igcse tomorrow wish me luck ❤

[@gautamsahni674]

Thank you so much!

[@Harini_24]

How do we tell if the forward or backward reactions are exothermic or endothermic? p.s TYSM, you are literally a live saver and I'm sure I speak for hundreds of other students out there.

[@eliselomotey5859]

The question should tell you I’m pretty sure

[@shumailamuzaffar2861]

If the forward reaction arrow is towards reactants side it's endothermic if the arrow is towards products side it's exothermic.

[@myballs2900]

⁠@@shumailamuzaffar2861 is the forward rate not always pointing toward the right?

[@amunet593]

Thx for the vid !

[@ravish3028]

Mr trying to learn this before my Ol IGCSE examination

[@ayzelplayz3543]

Really helped me out

[@eleanorlacey]

i get it! i get it! i get it! i FINALLY get it! thank you SOOOO much cognito!!

[@Cognitoedu]

Yay, glad we could help!! 🥳

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Watching this video just before my igcse chem paper 2👀😍

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Good stuff! : - )

[@Cognitoedu]

Thank you!

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i can learn more in a 45 sec recap than an hour lesson

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Revising for tomorrow's cieschemistry atp

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Watching this video…and tom is my igcse mocksss examssss✨✌️

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actually thank you so much

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Watching this 5 minutes before my GCSE test

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How was it?

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legend

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Informative 👏👏

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If I pass its because of this guy

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Such a good explanation

[@fatimai01]

do you only need to know the temperature or do you need to know pressure and concentration

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I loved your video so much❤

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watching a day before exam 🩷

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Me : trying to learn the whole of chemist the same day I have my gcse 👍

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Same here

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Yep same

[@disnickthingz5408]

@@charlieholme5908 so how was it

[@charlieholme5908]

@@disnickthingz5408 it went alright tbf, some of the questions at the end of the exam were abit funky😂 hbu?

[@disnickthingz5408]

@@charlieholme5908 i really liked it, the chromatography questions were a 10

[@omarehab2151]

thanks bro

[@kaihutchingsmcconkey8431]

Nice one mate night before gcses’s

[@readingamber]

hardest topic for me in chemmmmm

[@arubaidris9911]

And me trying to learn this 20 min before my igcse chemistry exam

[@mahirprince264]

Brother I have two confusions...Can u plz help? i)what is actually meant by concentration? Is it how dilute or dense? Or is it referred to as amount? In my book its written concentration (amount) what is amount!! ii) what is meant by that the reactions are equal or constant? Does that mean they are at exactly same rate(speed) or are they constant within themselves? By same rate I mean if one is turning into other as 5, simultaneously other one is turning into first one as 5..u et my point... Please please help😥😥

[@justaperson1998]

me teaching it to myself since I can't focus in online lessons for the life of me

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Ig evryone can relate to this

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@@hareemshahid1423 yup

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Nice👍👍

[@charliedaunicorn9895]

This video helped me get good marks on my rate of reactions test 😃😃😃

[@noelabiye2413]

Thank uuu

[@alejandravalle6315]

how do u know that the forward reaction is endothermic and the other one exothermic

[@deathj]

I have a question how would pressure affect the equilibrium

[@marcelaleyva6700]

What determines if a reaction is reversible or irreversible?

[@bernard6661]

nice.

[@BennaCaique1]

How do I know if there is more products than reactants in my reaction ?

[@shahbazmehmood6464]

Go check out his video on le Chatliers principle

[@shahbazmehmood6464]

If forward reaction is occurring at a faster rate than backward reaction

[@matthewcandy4211]

Hi Tom