AQA A-Level Chemistry - Aluminium

This video looks at the reactions of the aluminium complex.

[liabeart]

on the AQA new spec [Al(H20)6]3+ in an excess of NaOH produces [Al(OH)4]- a white ppt

[AbdullahADH]

"This is it's life". :)

[sarahsandy]

I LOVE your video!! THANK YOU so much - you are hilarious!

[AL]

Hi this is probably stupid but on the exam question it says an excess of ammonium chloride do the chloride ions not come into play in this reaction not even as like a pale yellow/green gas

[gusmcquade]

How come copper reacts with excess ammonia but not OH- And aluminium reacts with excess OH but not xs ammonia?? Could you explain why one reacts with one but not the other will help me remember ? Cheers

[katherinegarcia]

Don’t feel bad for aluminium, white is made up of all colours so it’s the most exciting of all 🤣🤣 love the sound effects though, I will remember all the colours because of the way you talk in your videos!

[Anji._]

your videos are really helpful....thank you...keep it up

[eveducker]

how do you know that it's acting as a base and not as a ligand substitution reaction?

[mstoner]

The question says aluminium chloride. Why do we write the aluminium compound as its hexaaqua ion form?

[EsotericMedic]

Why is there two molecules of Al(H2O)6 ions in the equation with Diaminoethane- is it because there are two NH2 groups and therefore 2 protons are donated per Aq. Aluminium chloride (forming 2+ ions of diaminoethane).

Would [Al(H20)6]3+ + 3 H2NCH2CH2NH2 = Al(H2O)3(OH)3 + 3H3NCH2CH2NH3+ be accepted? (1 mole of Aq. Aluminium chloride reacting with diaminoethane to form +1 ions instead of 2+ ions)

[floryk]

if the thing in the exam question "gained two protons" why does it have a 2+ charge and not a 2- charge?? I thought gaining was negative

[roman]

Do we need to know about Cobalt reaction with oxygen and hydrogen peroxide? Spec doesn't seem to say anything about it but my official aqa exam board new spec book has a whole page explaining it....???

[rrockchick]

Hi,
Would this topic appear in the new paper 1 or paper 2 exam?

[adibyaseen]

So do we need to know about chromium and cobalt?

[jamesellis]

For the last question would you not also get 3H20 as it acts the same as ammonia

[pipabbott]

Laughing too much at the excitement of the examiner… including Al