Gibb's Free Energy | Entropy |Thermodynamics | Exam Question Walkthrough | A level Chemistry

Gibbs Free Energy Exam Question.
Entropy. Enthalpy Change.
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[@shotoswife905]

NO WAY I UNDERSTOOD THIS TY TY TY TY TY

[@chemistrytutor]

Excellent! Just in time (hopefully it comes up)!

[@dfszf4743]

did it come up@@chemistrytutor

[@chemistrytutor]

@dfszf4743 not for a big question really. I'd expect a Gibb's question on paper 1 or 3 this year

[@prof.seematambeMScinchemistry]

Very information and Excellently explained thank you so much Sir

[@chemistrytutor]

You're very welcome 😀

[@Masowe.]

Thanks so much

[@chemistrytutor]

Very welcome! It's a great question - I hope it comes up this year!

[@Masowe.]

@@chemistrytutor that would be wonderful

[@brentube743]

Great video thank you. Can you please explain the maths behind why G=0 changes the reaction from dG= dH - TdS --> dH=dST.

[@brentube743]

I end up with -T = -dH / dS. Can't get rid of the minus. Any tips would be great thanks you

[@chemistrytutor]

First step
0 = dH - TdS
Then add TdS to both sides
0+TdS = dH - TdS + TdS
So TdS = dH
Divide both sides by dS
And the dS cancel from left
T = dH/dS

[@brentube743]

Thank y so much :)@@chemistrytutor

[@chemistrytutor]

@brentube743 no problem 😊

[@thihalyaravichandran7632]

hello sir can you do a video on thermodynamic, a full a level chemistry explained video please.

[@chemistrytutor]

I'm currently working on this! 😀
It's looking like a lengthy video so I'll do it in two parts. One on Born-Haber cycles and another on entropy