Login

Search the forums now!

Welcome, Guest. Please login or register.

September 20, 2025, 09:11:34 am
Pages: [1] 2   Go Down

Author Topic: CHEM 2010 EXAM LAST QUESTI0N  (Read 3607 times)  Share 

0 Members and 1 Guest are viewing this topic.

matt123

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1653
  • Strive.
CHEM 2010 EXAM LAST QUESTI0N
« on: June 09, 2010, 03:31:57 pm »
the question about the boiling points

its like .. out of the volatile gases .. pick one which isnt a part of the sample
i said methanol? .. was that correct?
Logged
2009 : Physical Education
2010  ATAR : 91.45 , Bio , Chem , Methods , Psychology , English
Completed VCE at the age of 16.
2011 : Bachelor of pharmacy
2012 : Hopefully med? " crosses fingers"

Studyinghard

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1313
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #1 on: June 09, 2010, 03:38:03 pm »
Could have used methanol or ethanol couldnt you ?
Logged
"Your life is like a river, no matter what you just got to keep on going"

matt123

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1653
  • Strive.
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #2 on: June 09, 2010, 03:38:33 pm »
yeah im pretty sure
Logged
2009 : Physical Education
2010  ATAR : 91.45 , Bio , Chem , Methods , Psychology , English
Completed VCE at the age of 16.
2011 : Bachelor of pharmacy
2012 : Hopefully med? " crosses fingers"

jimmy999

  • Victorian
  • Forum Leader
  • ****
  • Posts: 635
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #3 on: June 09, 2010, 03:42:40 pm »
Methanol or ethanol would have sufficed. This is because the first fraction collected is at 97.2 degrees. If methanol or ethanol were present in the sample, then the first fraction would have been collected at a lower temperature
Logged
Religion and Society (38), IT - Software Development (45) English (35), Chemistry (49), Methods CAS (48), Specialist Maths (50)
ENTER: 99.15

2010 - Bachelor of Science(Maths)/Engineering(Chemical) - Monash Clayton

matty.k

  • Victorian
  • Forum Regular
  • **
  • Posts: 80
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #4 on: June 09, 2010, 03:43:54 pm »
i said methanol woo!
Logged

simonhu81292

  • Victorian
  • Forum Leader
  • ****
  • Posts: 553
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #5 on: June 09, 2010, 03:48:19 pm »
huh???i forgot the question...
why?
could someone explain?
Logged
2009: -.- bio 3/4
2010: -.- Physics . Spesh . Methods CAS . Chinese SL Advanced . Chemistry . English Language
_____________________________________________________

2011-B.Com@UoM
2014 - Hons in Finance@UoM
2015 - Working in Funds Management (Equities)

VCE123456789

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 263
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #6 on: June 09, 2010, 03:50:02 pm »
isnt it butanol and pentanol
Logged

Studyinghard

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1313
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #7 on: June 09, 2010, 03:51:36 pm »
Nope, question asked which couldnt be in the mixture.

If methanol or ethanol were in the mixture then they would come out first but they didnt.

Logged
"Your life is like a river, no matter what you just got to keep on going"

kakar0t

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 310
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #8 on: June 09, 2010, 03:52:58 pm »
But it's lab fracional distillation...
Logged

qshyrn

  • Victorian
  • Forum Leader
  • ****
  • Posts: 535
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #9 on: June 09, 2010, 03:53:11 pm »
Quote from: Studyinghard on June 09, 2010, 03:51:36 pm
Nope, question asked which couldnt be in the mixture.

If methanol or ethanol were in the mixture then they would come out first but they didnt.


how[ do u know they didnt?
Logged

andy456

  • Victorian
  • Forum Leader
  • ****
  • Posts: 951
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #10 on: June 09, 2010, 03:53:26 pm »
Quote from: VCE123456789 on June 09, 2010, 03:50:02 pm
isnt it butanol and pentanol

I did this too.... I'm shattered and it's all cause I misread the question!!!!!!!
Logged
VCE 2010: Eng 42 | Legal 49 | Chem 37 | MM 34 | Indo SL 33 |
ATAR: 97.45
 
2011: Bachelor of Arts Monash University
2012: Bachelor of Commerce?? Please!!

VCE123456789

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 263
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #11 on: June 09, 2010, 03:56:00 pm »
mao is saying it would me butan ol and pentan ol
Logged

Souljette_93

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1092
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #12 on: June 09, 2010, 03:56:39 pm »
Quote from: qshyrn on June 09, 2010, 03:53:11 pm
Quote from: Studyinghard on June 09, 2010, 03:51:36 pm
Nope, question asked which couldnt be in the mixture.

If methanol or ethanol were in the mixture then they would come out first but they didnt.


how[ do u know they didnt?



Because the Question said that the first fraction was at 97.2, which  corresponds to propanol..
so anything less can't be the mixture. Plus only 2 Alcohols were tested..


Souljette
Logged
Ancient Persian Proverb; " I Wept because i had no Shoes, until i saw a man with no feet!"

First they came for the Socialists, and I did not speak out --
Because I was not a Socialist.
Then they came for the Trade Unionists, and I did not speak out --
Because I was not a Trade Unionist.
Then they came for the Jews, and I did not speak out --
Because I was not a Jew.
Then they came for me -- and there was no one left to speak for me.
-Martin Niemoller, a german pastor

Studyinghard

  • Victorian
  • Part of the furniture
  • *****
  • Posts: 1313
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #13 on: June 09, 2010, 03:57:25 pm »
As much of a genius Mao is , i think hes wrong :)
Logged
"Your life is like a river, no matter what you just got to keep on going"

Yoshi

  • Victorian
  • Adventurer
  • *
  • Posts: 18
Re: CHEM 2010 EXAM LAST QUESTI0N
« Reply #14 on: June 09, 2010, 03:57:54 pm »
Also got it wrong, why do I always not read the damn question properly. >:(
Logged
Pages: [1] 2   Go Up