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September 15, 2026, 12:25:56 pm
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Author Topic: Unit 3 Questions MEGATHREAD :)  (Read 73014 times)  Share 

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DisaFear

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #495 on: June 14, 2011, 09:43:47 pm »
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Quote from: Lols123 on June 14, 2011, 09:31:51 pm
what are you guys doing atm?
one more practice paper? looking over notes?

Yes, doing one more practice paper, then notes revision
Then gonna end the night with a game or two :P
Then i've got the train and tomorrow to study


Are there any tables around showing what factors increase/decrease titration values/what-not with explanations?
Like "It wasn't filtered properly so it should be heavier than expected, means this is less/more,etc"
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(AN chocolate) <tisaraiscool> Does it taste like b^3's brain?
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azure

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #496 on: June 14, 2011, 09:46:58 pm »
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Quote from: Lols123 on June 14, 2011, 09:31:51 pm
what are you guys doing atm?
one more practice paper? looking over notes?

Hahaha, last minute read over my notes... (would be shocking if I'm still learning new things! D= ) Pretty tired from a last day of cramming so off to have an early night soon. =) Have fun tomorrow.
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azure

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #497 on: June 14, 2011, 09:50:33 pm »
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Quote from: Lols123 on June 14, 2011, 09:43:27 pm
would VCAA ever ask us predict how downfield a chemical shift is judging from a structure?
does it work like this: the closer the H or C atom is to an electronegative atom like O, the more downfield it is?

Hmm... this would be about how much deshielding/shielding there is. According to my school, we don't need to know about it.... but would be helpful to understand that the closer it is to a functional group such as COOH, the more downfield that H atom will be. If I'm wrong, please correct me.
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Water

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #498 on: June 14, 2011, 09:51:52 pm »
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lol aite, thanks, deleted my other post. Peow >:!.


Thought, I was being a retard for asking it haha. Felt self conscious, but I shall be studying an extra 2 hours ....  School bright and early :)
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DisaFear

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #499 on: June 14, 2011, 09:52:38 pm »
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Quote from: Water on June 14, 2011, 09:51:52 pm
lol aite, thanks, deleted my other post. Peow >:!.

Yes, causing me to delete mine lol, lest people wonder about my sanity
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(AN chocolate) <tisaraiscool> Does it taste like b^3's brain?
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Greatness

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #500 on: June 14, 2011, 09:54:55 pm »
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Quote from: azure on June 14, 2011, 09:50:33 pm
Quote from: Lols123 on June 14, 2011, 09:43:27 pm
would VCAA ever ask us predict how downfield a chemical shift is judging from a structure?
does it work like this: the closer the H or C atom is to an electronegative atom like O, the more downfield it is?

Hmm... this would be about how much deshielding/shielding there is. According to my school, we don't need to know about it.... but would be helpful to understand that the closer it is to a functional group such as COOH, the more downfield that H atom will be. If I'm wrong, please correct me.
Yep the closer a H or C is to an electronegative atom the more it will be shifted downfield.
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GuessWho

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #501 on: June 14, 2011, 09:57:09 pm »
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Just to clarify, When esterification occurs which loses the OH group. Alcohol or Acid? I assume same thing goes for glycerol and fatty acids.
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Lols123

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #502 on: June 14, 2011, 09:58:06 pm »
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did you guys bother learning all the penicillin stuff
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azure

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #503 on: June 14, 2011, 09:59:06 pm »
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Quote from: Lols123 on June 14, 2011, 09:58:06 pm
did you guys bother learning all the penicillin stuff

Penicillin....?! There was stuff about penicillin?! D=
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Lols123

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #504 on: June 14, 2011, 10:01:30 pm »
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in the heinemann textbook there is
havent seen it tested anywhere though
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DisaFear

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #505 on: June 14, 2011, 10:01:33 pm »
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What is penicillin?  :crazy2:
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(AN chocolate) <tisaraiscool> Does it taste like b^3's brain?
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Asx4Life

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #506 on: June 14, 2011, 10:04:44 pm »
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Does anyone have a good way of remembering the solubility table?
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Greatness

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #507 on: June 14, 2011, 10:05:42 pm »
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Quote from: GuessWho on June 14, 2011, 09:57:09 pm
Just to clarify, When esterification occurs which loses the OH group. Alcohol or Acid? I assume same thing goes for glycerol and fatty acids.
The carboxyl group loses the OH which is the acid.
Actually im not too sure :P
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DisaFear

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #508 on: June 14, 2011, 10:08:11 pm »
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For those stupid like me:

http://www.titrations.info/titration-errors

You probably cant use half of them on the exam though
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(AN chocolate) <tisaraiscool> Does it taste like b^3's brain?
BSc (Hons) @ Monash (Double major in Chemistry)

azure

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Re: Unit 3 Questions MEGATHREAD :)
« Reply #509 on: June 14, 2011, 10:09:00 pm »
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Came across on question telling me to give the semi structural formula of the triglyceride shown... how do we do that? As far as I know, I can only give the semi structural formula of glycerol... haha, but not both of them combined... =|
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2010: Chinese SL
2011: English, Japanese SL, Chemistry, Methods, Economics

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