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September 16, 2025, 09:14:35 am
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Author Topic: Short Answer Solutions  (Read 7725 times)

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Bruzzix

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Re: Short Answer Solutions
« Reply #15 on: November 10, 2015, 06:23:47 pm »
Quote from: sunshine98 on November 10, 2015, 06:01:09 pm
Isnt the oxygen in the thermochemical equation supposed to be 49/2 not 51/2 , or is it just me?
Quote from: Splash-Tackle-Flail on November 10, 2015, 06:13:24 pm
yea i got 49/2, I think you get 51/2 if you forget the two oxygens in the hydrocarbon thing
Yeah it should be 49/2 O2
« Last Edit: November 10, 2015, 07:27:39 pm by Bruzzix »
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wobblywobbly

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Re: Short Answer Solutions
« Reply #16 on: November 10, 2015, 06:43:35 pm »
You could also have said glycerol or KOH for the layers question.
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:)

Bruzzix

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Re: Short Answer Solutions
« Reply #17 on: November 10, 2015, 06:45:42 pm »
Quote from: wobblywobbly on November 10, 2015, 06:43:35 pm
You could also have said glycerol or KOH for the layers question.
What about methanol? nvm, that was Thushan's answer
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zsteve

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Re: Short Answer Solutions
« Reply #18 on: November 10, 2015, 06:57:40 pm »
Quote from: zsteve on November 10, 2015, 06:12:19 pm
In Q4, I read absorbance as 10.0 mmol/L (extra sig fig, but the graph doesn't say anything) (simply my interpretation of the graph). Is this acceptable?
bump :)
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jyce

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Re: Short Answer Solutions
« Reply #19 on: November 10, 2015, 06:59:39 pm »
Quote from: dankfrank420 on November 10, 2015, 06:19:54 pm
For the isomer of butanol, do you have to draw butan-1-ol or could you draw something else?

Could glycerol be found in the aqueous layer in question 9a?

Yes to both questions.
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dankfrank420

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Re: Short Answer Solutions
« Reply #20 on: November 10, 2015, 07:09:33 pm »
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zsteve

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Re: Short Answer Solutions
« Reply #21 on: November 10, 2015, 07:20:33 pm »
Quote from: zsteve on November 10, 2015, 06:57:40 pm
bump :)
Lol does anyone know? Or is this blurry, grey, in-between-the-lines stuff that we can't know until VCAA comes out with the exam report  :-\ A bit stressed over one mark, but yeh
In Q4, I read absorbance as 10.0 mmol/L (extra sig fig, but the graph doesn't say anything) (simply my interpretation of the graph). Is this acceptable?

Also, with everyone talking about 51/2 and 49/2, I doubled coefficients (and deltaH) - was there any issues with that? (so there's two methyl palmitate in the eqn)
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jyce

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Re: Short Answer Solutions
« Reply #22 on: November 10, 2015, 07:21:26 pm »
Quote from: zsteve on November 10, 2015, 07:20:33 pm
Lol does anyone know? Or is this blurry, grey, in-between-the-lines stuff that we can't know until VCAA comes out with the exam report  :-\ A bit stressed over one mark, but yeh
In Q4, I read absorbance as 10.0 mmol/L (extra sig fig, but the graph doesn't say anything) (simply my interpretation of the graph). Is this acceptable?

Yes, I'm sure that'll be no biggy.
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jyce

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Re: Short Answer Solutions
« Reply #23 on: November 10, 2015, 07:28:03 pm »
Quote from: zsteve on November 10, 2015, 07:20:33 pm
Also, with everyone talking about 51/2 and 49/2, I doubled coefficients (and deltaH) - was there any issues with that? (so there's two methyl palmitate in the eqn)

No issues with that at all. I actually think that doubling the coefficients is better, since you can't actually have 49/2 oxygen molecules.
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alchemy

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Re: Short Answer Solutions
« Reply #24 on: November 10, 2015, 08:05:18 pm »
I think I wrote methyl stearicate instead of methyl stearate. I had all other marks correct for that question, however.
Do you think I'll get the mark for the naming?
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warya

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Re: Short Answer Solutions
« Reply #25 on: November 10, 2015, 08:12:31 pm »
Quote from: alchemy on November 10, 2015, 08:05:18 pm
I think I wrote methyl stearicate instead of methyl stearate. I had all other marks correct for that question, however.
Do you think I'll get the mark for the naming?

I wrote methyl stearitate hahahah
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thushan

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Re: Short Answer Solutions
« Reply #26 on: November 10, 2015, 11:40:30 pm »
Quote from: sunshine98 on November 10, 2015, 06:01:09 pm
Isnt the oxygen in the thermochemical equation supposed to be 49/2 not 51/2 , or is it just me?

Ah yes, careless mistake.
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rennie

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Re: Short Answer Solutions
« Reply #27 on: January 05, 2016, 02:07:39 pm »
Hi.  I am looking for some answers to last years exam.  The link in this thread is not working for some reason.  Does anyone have a copy they are able to post or know of one elsewhere online?  Thanks
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