Probably one of the hardest parts of paper 1

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!

@MaChemGuy

5 жыл бұрын

Ashika Yeasmin Very kind of you to say. Glad you’re finding the videos helpful 😊

I find other chem youtubers boring but your accent makes it interesting thanks

@MaChemGuy

5 жыл бұрын

Josh Newsom Haha!! Cheers for that

@Lizyouu

5 жыл бұрын

hahaha me too

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 ?

Thank you Are these all ionic equations ?

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?

@a1.ghost.

5 жыл бұрын

Yh I've been searching for videos on that for ages too but no one seems to have anything or kno much about it...

@cha0spretzel-534

2 ай бұрын

yeah i can’t seem to find one about it either :/

@orlaithrees2528

Ай бұрын

@@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!!?

@MaChemGuy

6 жыл бұрын

Asdapo It’s actually purple/violet but any impurities present make it look green. They accept either colour

@shroomer_jim

6 жыл бұрын

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!

@tgdhsuk3589

6 жыл бұрын

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

At 5:00 do we have to know all 3 of them reactions or can we just remember the simplified reaction?

@MaChemGuy

Жыл бұрын

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

Also for chromium and excess ammonia can u write [Cr(h20)6]3+ +6NH3 = [Cr(NH3)6]3+ +6H20 instead of what u wrote?

@MaChemGuy

Жыл бұрын

Yeah

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- ?

@MaChemGuy

2 жыл бұрын

Either is fine

are these all the ones we need to know for the exam? thanks for all your help!!

@MaChemGuy

5 жыл бұрын

Anouk Cavendish I think I’ve covered just about everything, still more to make though. You’re welcome

@anoukcavendish972

5 жыл бұрын

@@MaChemGuy more reactions or just more videos on TE topic?

Do I have to put pale blue or can I just say blue 🤔 ?

@MaChemGuy

Жыл бұрын

Blue is fine

paper 1 tomorrow

@joshoddy9560

5 жыл бұрын

shitting myself

@oswin4715

5 жыл бұрын

Ree hope it goes well

Last minute gang wya

@smani7637

5 жыл бұрын

yeet imma fail horribly today lmao

@a1.ghost.

5 жыл бұрын

@@smani7637 Nah we got this

@oswin4715

5 жыл бұрын

Yeeet im bricking it I hope most of it is maths like ph and titration shit lmao

@a1.ghost.

5 жыл бұрын

Fml I change my mind we don't got this

@oswin4715

5 жыл бұрын

@@a1.ghost. fully fucked it I'd be lucky to get a C rn

is 6:51 the wrong way round?

@MaChemGuy

6 жыл бұрын

LegendaryVegeta nope