AQA 2.3 Group 7, the halogens REVISION

[racheldoran]

Timestamps:
TRENDS IN PROPERTIES (2.3.1)
1:04 = Trends in BP and electronegativity
3:18 = Displacement reactions (trend in oxidising ability of the halogens)
13:02 = Trend in reducing ability of halide ions
14:28 = Reactions of halides with conc. H2SO4
20:50 = Reactions of halides with silver nitrate (test for halides)

USES OF CHLORINE & CHLORATE(I)
6:40 = Bleach (NaClO)
8:24 = Water Sterilisation (Reactions of Chlorine with water)
10:58 = Advantages and Disadvantages of chlorinating water

REQUIRED PRACTICAL 4: Ion Tests
23:51 = Group 2
24:42 = Ammonium
25:15 = Hydroxides
25:45 = Carbonates
26:07 = Sulfates
26:55 = Order of tests (avoiding false positives)

[naven]

I’ve been failing the AS course all year. Haven’t understood a thing outside of organic chemistry. Then I discovered your playlist, and safe to say in a few hours of youtube, I’ve learned more than I did in five months of college. With my AS mock tomorrow, if my grade finally scrapes above a U, it’s all thanks to you!

[seinebabbas]

Halogens: 1:09
Displacement reactions: 3:22
Bleach: 6:46
Water sterilisation: 8:27
Drinking water: 10:59
Reducing power of halide ions: 13:04
Halide ions + sulphuric acid: 14:32
Halide ions + silver nitrate: 20:50
Test for ions: 24:00

[jailbreaker]

28 min video

Me: takes 3 hours to make notes on it...

[sadies]

I've struggled so much in inorganic but this video was so engaging and understandable while covering all the material. You're a godsend

[favourebohon]

You made this ages ago but I want to say thank you so so much. I've always hated the reducing power equations but your examples and the train analogy were excellent. I now know them from memory!

[KyuuleGamingHD]

You can alternatively form Na2S04 from sulfuric acid and sodium chloride/bromide/iodide as an extra note.

[olorireAinenehi]

Chemistry P1 tomorrow and this channel has been absolutely amazing thank you :)

[ximfo]

You legend, before i watched this I was struggling but this helped a lot!

[hellohellohello]

Have my chem mock on Monday and this vid was super useful in filling in any gaps I needed to fill. Now the A* seems more achievable so thank you so so much!

[kundai]

Loving this revision series! perfect for a quick overview on the to and from school 😅

[aishafarah]

I finally understand this topic.Thank you so muchhh

[gamehacker]

Thank you I don’t even normally comment like ever but I WATCHED EVERY OTHER HALOGEN VIDEO AND COULD NOT UNDERSTAND AT ALL. Like IDK WHAT WAS WITH THIS TOPIC
But when I watched yours honestly I understand it now like I can do questions to it so I’m happy I have a base so thank you 💙

[Jregi]

i really like your videos. they'are straight forward and thanks to you i understand the topic. My end of year exam will be on five days and my chemistry teacher didn't even teach us this.

[bellamarina]

Thank you so much for these videos they're a life saver 👍🏻👍🏻

[jimliu]

Thanks for this video! One thing, surely the equation for the reaction of chlorine with water under sunlight would be. H2o+Cl2->2H+ + 2Cl- + 1/2O2, or doubled.

[kirenrashid]

Hi, quick question, do you think these revision videos go into enough detail or should I watch the subtopic videos for more depth of knowledge

[hamsejama]

I' m very happy to listen this good lessons

[shmlobblob]

With disproportionation reactions, how can you tell that the chlorine is both oxidised and reduced, just by looking at the oxidation states?

does +1=oxidised and -1=reduced or?

[DDD-weem]

Thank you sir, it is really clear to understand!