GCSE Chemistry - Esters #59
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- Опубликовано: 17 окт 2024
- This video covers:
What esters are
How they're made from carboxylic acids and alcohols
Their properties
Exam board specific info:
AQA - Everything is relevant to your course! You only need to know the example of ethyl ethanoate.
IGCSE Edexcel - Separate/triple science and higher tier only
Edexcel - Not in course, but useful for understanding condensation polymers
OCR 21st Century - Not in course, but useful for understanding condensation polymers
OCR Gateway - Not in course, but useful for understanding condensation polymers
Maths Playlist:
• GCSE Maths (9-1)
GCSE Chemistry playlist:
• GCSE Chemistry - Atoms...
GCSE Biology Playlist:
• Video
GCSE Physics Playlist:
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Thanks Arnav, we're glad you're finding them effective 🙌
What I learned from the video:
*Esters often have a pleasant smell, meaning they are sweet or fruity.
*They are volatile, meaning that esters can evaporate easily.
*Uses: Used in perfumes and food flavorings.
*Carboxylic acid + Alcohol ----------> Ester + Water (A concentrated sulfuric acid catalyst is used)
*Moreover, when carboxylic acid and alcohol combine or react together, the carboxylic acid loses its -OH group, and the alcohol loses the hydrogen atom from the -OH group. Together, these three atoms form a water molecule (byproduct)
Eg. Propanoic acid + Propanol ----------> Propyl Propanoate + Water (Concentrated H2SO4 is used)
*Conclusion: Esters are another homologous series with a -COO functional group, which is called the 'ester group' or 'ester link.'
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@@enyplayz1514bro it’s 2 minutes long 💀
@@xar5059 but the text is 1 minute long
If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform - cognitoedu.org/coursesubtopic/c2-gcse-aqa-h-t_7.15. The platform’s totally free, and has been built to make learning and revision as easy as possible. The main features are:
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Amadeus & Tom
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Hi, I just wondering, since the carboxylic acid is more "acid" they will release their hydrogen from -COOH functional group. So the acid will loose the Hydrogen and the alcohol will release the -OH, isn't it?
nice wondering
nice wondering, it's true
Hi, have you gotten any answer yet? I'm still wondering why carboxylic acid loses it's -OH and not the -H..
@@Hassan-ow1qu (ooc)
It’s because the -OH molecule is Hydroxide which is connected and can’t be separated by a lot of methods which is why the acid loses the -OH as a whole and not just the -H
(Hope this helps :))
I love this series but i would recommend you to be a little bit more elaborative on the naming of these organic compounds which are very tricky and commonly come at exams.🙂
Hey of the carboxylic acid loses it's OH group isn't it acting as a base in technicality?
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Best of luck!
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One more question. I understood that to increase the rate of reaction you used an acidic catalyst but why an acidic catalyst can't something other than this be used?🤔
1:04 what is this reaction called? is it a condestionreaction?
Yes
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Glad we could help Lina! And thanks to your friend!! 🙌
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Doesn’t carboxylic acids also have coo group?
they have an OH group and then a double bonded O atom
What a helpful video and so captivating
I think this video isn't listed on the section on your website? :)
The best channel
Thanks for the helpful video!
I would really appreciate it if you could make a video on how to name and draw esters.
Thank you 👍
do you think you will do A-Level Bio, chem and Physics
Thanks i was not able to understand this from anyone
I just watched 3 videos about organic chemistry which were alcohol, carboxylic acid and esters. I understood everything that I was confused in for a whole week, that took me 9 minutes and 15 second to master this lesson. I would like to call you the master of chemistry
So usefull thank you so mutch
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Me too! This channel is so much easier to understand than other channels like free science lessons. I regret not finding you sooner and it’s a shame I can’t showcase everything I understand through these vids on exams. But it eez what it eez I guess
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Can you upload video of isomers
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Thanks so much Christeena, all kudos goes to Tom, our animator 😊
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Who helps you find the relative formula mass of an ester? moles=mass/Mr
A molester
🤣
Can I have permission to take this video for my coursework?
Tysm
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Greatest
watching this 3 hours before my chem gcse lool
How did it go
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Fruity odours. Ester esteem.
studying esters as well? chem is making me insane
My name is Ester
Aren't esters formed from acyl and alkoxide ions?
globally, looking at ESTERS
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Define in hindi
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