All of the transition element reactions required for OCR A. Video includes ligand substitution reactions (inc haemoglobin) and precipitation reactions, chemical equations and colour changes.
OH MY GOD!!!!!!thank you so much!my exam is in 10 days and this was so helfulll!!i honestly think your channel deserves more subscribers and views!!!!! because WOW!what an explanation!am so happy i found thesee!thank youuuuu once again!
Sorry Sir to keep bothering you. But on the spec it says: "Redox reactions (k) redox reactions and accompanying colour changes for: (i) interconversions between Fe2+ and Fe3+ (ii) interconversions between Cr3+ and Cr2O72- (iii) reduction of Cu2+ to Cu+ and disproportionation of Cu+ to Cu2+ and Cu " Do you have a video on this?
@@cha0spretzel-534 Hey, I haven't seen any videos on these either but if you search 'OCR A Chemistry Transition metal colours' there should be a link which has like images of test tubes with the colours & relevant ions. These are all on there :)
MaChemGuy Thank you so much i was beginning to panic, ocr spec said green and didn't say why it conflicted with other sources. One less thing to worry about!
you should do the set 1 set 2 and 2017 papers aswell im so scared i dont know what to revise am i correct in thinking there is nothing organic in the first paper
Simplified one is generally accepted. So long as you're aware that the addition of aqueous ammonia leads initially to the formation of the hydroxide precipitate
Probably one of the hardest parts of paper 1
I find other chem youtubers boring but your accent makes it interesting thanks
Josh Newsom Haha!! Cheers for that
hahaha me too
OH MY GOD!!!!!!thank you so much!my exam is in 10 days and this was so helfulll!!i honestly think your channel deserves more subscribers and views!!!!! because WOW!what an explanation!am so happy i found thesee!thank youuuuu once again!
Ashika Yeasmin Very kind of you to say. Glad you’re finding the videos helpful 😊
Thanks alot exam is in 1 week
Sorry Sir to keep bothering you.
But on the spec it says:
"Redox reactions
(k) redox reactions and accompanying colour changes for:
(i) interconversions between Fe2+ and Fe3+
(ii) interconversions between Cr3+ and Cr2O72-
(iii) reduction of Cu2+ to Cu+ and disproportionation of Cu+ to Cu2+ and Cu
"
Do you have a video on this?
Yh I've been searching for videos on that for ages too but no one seems to have anything or kno much about it...
yeah i can’t seem to find one about it either :/
@@cha0spretzel-534 Hey, I haven't seen any videos on these either but if you search 'OCR A Chemistry Transition metal colours' there should be a link which has like images of test tubes with the colours & relevant ions. These are all on there :)
Thanks for the video, it's incredibly helpful with the exam in only 3 days time! However I was under the impression aqueous Cr3+ is green!!?
Asdapo It’s actually purple/violet but any impurities present make it look green. They accept either colour
MaChemGuy Thank you so much i was beginning to panic, ocr spec said green and didn't say why it conflicted with other sources. One less thing to worry about!
you should do the set 1 set 2 and 2017 papers aswell
im so scared i dont know what to revise
am i correct in thinking there is nothing organic in the first paper
paper 1 tomorrow
shitting myself
Ree hope it goes well
Also for chromium and excess ammonia can u write [Cr(h20)6]3+ +6NH3 = [Cr(NH3)6]3+ +6H20 instead of what u wrote?
Yeah
At 5:00 do we have to know all 3 of them reactions or can we just remember the simplified reaction?
Simplified one is generally accepted. So long as you're aware that the addition of aqueous ammonia leads initially to the formation of the hydroxide precipitate
Thank you Are these all ionic equations ?
Do I have to put pale blue or can I just say blue 🤔 ?
Blue is fine
where did NH4+ come from in the reaction of hexaaquacopper with ammonia?
His sir is there a method on how to do these equations or is it just you have to remember them ?
are these all the ones we need to know for the exam? thanks for all your help!!
Anouk Cavendish I think I’ve covered just about everything, still more to make though. You’re welcome
@@MaChemGuy more reactions or just more videos on TE topic?
When reacting with excess OH-, would you have to write Cr(OH)3(H2O)3 + 3OH- or could you just write Cr(OH)3 + 3OH- ?
Either is fine
Last minute gang wya
yeet imma fail horribly today lmao
@@smani7637 Nah we got this
Yeeet im bricking it I hope most of it is maths like ph and titration shit lmao
Fml I change my mind we don't got this
@@a1.ghost. fully fucked it I'd be lucky to get a C rn
is 6:51 the wrong way round?
LegendaryVegeta nope