ALL Curly Arrow Mechanisms for OCR A-level Chemistry

[@mrmurraygreen]

Check out this video for help with Level of Response Exam Questions = kzbin.info/www/bejne/omSuhJyfjs1ghq8

[@Con_Verse1]

Yo just wanna say a massive thank you, missed out on my GCSEs and the past two years have been very unique… I’m in love with physical chemistry but organic is just.. But your videos have been helping a lot and am aiming for a B, maybe even an A in chemistry! Keep up the great work

[@mrmurraygreen]

I’m so glad they’ve managed to help you - good luck in your exams!! 👍🏻👏

[@dousey32j44]

Something can't be very unique, it either is or isn't as the definition of unique is this it's unlike anything so how can it be very unlike anything. Hopefully you do better in your exams than you do with your grammar as its atrocious.

[@Con_Verse1]

@@dousey32j44 bro wants me to write with perfect grammar in a comment section you're a really salty bitter random 💀 I hope your life is okay and your dad hugs you I know you need it

[@harrypck8609]

@@dousey32j44 what a virgin

[@animalgarden6631]

@@Con_Verse1gl in 9 hours bro im grinding now

[@elliesmith7518]

Right; recon I can get through all 58 vids on the playlists before my exam at 9 tomorrow

[@mrmurraygreen]

🍿

[@mrmurraygreen]

Seriously though - lots of sleep 👍🏻👍🏻

[@kevinchiwera4594]

simple and straight forward👏👏

[@laiilaaaaaaa]

soooo heelpful thanks sm and its edited gorgeously

[@mrmurraygreen]

Glad it helped!

[@princeysuryan2561]

Hello prof. Your teaching is excellent and really helps me understand the material. It would be great if you could upload longer videos soon for more in-depth teaching

[@mrmurraygreen]

Hi, thanks for the feedback, I’m off KZbin until the new academic year. Take care.

[@hypejuice1321]

my goat!

[@chimpu-ls5fg]

2:31 - where did the water come from?

[@mrmurraygreen]

The NaBH4 is aqueous (although you don’t need to know this for OCR) and that’s the source of the water

[@benjaminbennett990]

Why is the carbocation used in the second version of electrophilic addition the more stable one?

[@mrmurraygreen]

Hi - it's because it's a secondary carbocation. These are when the C with the + charge is bonded to 1 H and 2 other C directly. This video should hopefully shed some extra light on the topic for you = kzbin.info/www/bejne/r5XUlmpte7eoqqc

[@joannadaniel9396]

thank you :)

[@mrmurraygreen]

You're welcome!

[@kiransumra5576]

Hello sir, in the OCR 2023 paper there was a question on nucleophillic substitution of acrolein (C=C and -CHO group), it assumed we knew that C=C bonds undergo nucleophillic substitution with CN-, are we meant to know this for the exam or was this just application question?

[@mrmurraygreen]

Hello - for that question you were meant to only react the -CHO group in the mechanism. The C=C was meant to remain unchanged in your answer. Hope that helps 👍🏻

[@rishikavia6848]

I love hustler

[@klargeworden]

For the first one, don't you need to include the lone pair on Br?

[@mrmurraygreen]

Nope. The Br- product doesn’t need any lone pairs shown. We only ever need to show a lone pair in a mechanism if we’re going to do something with it.

[@the-arctic-wolf1438]

​@@mrmurraygreen sorry this is so late but you'll never be marked down for including a lone pair when its unnecessary, as long as it is correct, right?

[@mrmurraygreen]

@@the-arctic-wolf1438 I’ve never seen it punished in mark schemes to my knowledge

[@barneyevans1253]

Soundtrack?

[@billyheard2486]

kzbin.info/www/bejne/jIvVdat6Zb-Ub6s

[@mrmurraygreen]

Free BGM included with iMovie 😅

[@rahh8222]

hey sir! thank you so much for this video. can you please tell me which ones are first year chemistry?

[@mrmurraygreen]

Electrophilic addition and Nucleophilic substitution are both in the AS-level (module 4) 👍🏻