OCR A 3.1.3 and 3.1.4 The halogens and qualitative analysis REVISION

[@haneefali7140]

May Allah protect you sir. Thank you very much.

[@lotusa8868]

Ameen

[@Idk-cb5qg]

@@lotusa8868 Awoman*

[@securitybreach5182]

@@Idk-cb5qg That’s just silly mate

[@josephtebay]

With the ion tests, I was told that adding HCl for carbonates would produce a false positive for chlorides as you have added one of the things you want to test for. This is also true for adding Barium chloride when testing for sulfates. Just for future please correct this.

[@JackAYoung11]

These are superb! Thanks sir!

[@AlleryChemistry]

You're welcome!

[@sea5205]

Great in depth yet straight to the point video!

[@Treezfreeze]

Loving this, please do A2 material too

[@AlleryChemistry]

Thanks! Have not done ones for A2. As I only do this part time they won't be done until next year unfortunately.

[@thelivvy11]

if you were to add barium chloride for the sulfate test wouldn't this effect the halide test? could barium nitrate be used instead?

[@user-gi3yr1gl7j]

tests for halides: silver nitrate and ammonia

[@hadinajjar9800]

watch in 1.25 speed

[@leviackerman5870]

I'm here watching in 2x speed at 1:53am

[@daisylord4930]

nah start in 2x speed then go to 1.5 and then 1.5 seems really slowww

[@nithikab]

@@leviackerman5870 this is so relatable

[@adebayoadedeji3736]

Hey sir, you mentioned that the aqueous layer after adding chlorine will undergo a colour change but won't the chloride layer remain colourless even after adding the organic solvent

[@OGGY365]

Also confused by this.

[@krstev29]

I need help! For me, finding the anion part of a compound when you have information about the color of precipitate amd aqueous solution is very hard and I don't know where to find information. Thank you for the video, I would appreciate if someone tells me about even more tips and theory or videos.

[@killer-for-hire9643]

Is this everything for 2019 too or has the board added some more stuff to learn

[@0fftherad4r]

would there really be a question discussing the ethical issues of chlorinating water?

[@mufc109]

Won't the reactivity increase down group 7 like it does with group 2 as the atomic radius increases so it's easier to lose an electron? Btw love these videos they are of great help will spread the word!

[@AlleryChemistry]

No. Group 7 elements accept an electron when they react. More difficult to accept an electron with increased shielding. This is what we have as we go down the group.

[@elijahpeprah8532]

no because if atomic radius increases the attraction between the nucleus and electrons become weaker so like allery chemistry said it becomes harder to gain an electron

[@FallenBankai]

Very useful, thanks

[@RB-nh1om]

thank youuu

[@AlleryChemistry]

No problem! Please share, the more people that benefit the better!

[@Spha29]

17:00

[@arii8495]

Absolute legend omg

[@sea5205]

Great video

[@Fun7ik]

when does 3.1.4 start?

[@dwcLDN]

I think 17:00

[@PakistaniBritish.]

Will this still valid in 2024 ?? Idk 🤷‍♂️ i just here to know what happens in halogen color change and also what when we add (cant remember) and color change to what 😅

[@AlleryChemistry]

Yeh, all still valid for today 👍

[@Hana-i9j7g]

ILY

[@Spha29]

17:00