Warning: Illegal string offset 'html' in /home/hsn/public_html/forum/cache/skin_cache/cacheid_1/skin_topic.php on line 909

Warning: Cannot modify header information - headers already sent by (output started at /home/hsn/public_html/forum/cache/skin_cache/cacheid_1/skin_topic.php:909) in /home/hsn/public_html/forum/admin/sources/classes/output/formats/html/htmlOutput.php on line 114

Warning: Cannot modify header information - headers already sent by (output started at /home/hsn/public_html/forum/cache/skin_cache/cacheid_1/skin_topic.php:909) in /home/hsn/public_html/forum/admin/sources/classes/output/formats/html/htmlOutput.php on line 127

Warning: Cannot modify header information - headers already sent by (output started at /home/hsn/public_html/forum/cache/skin_cache/cacheid_1/skin_topic.php:909) in /home/hsn/public_html/forum/admin/sources/classes/output/formats/html/htmlOutput.php on line 136

Warning: Cannot modify header information - headers already sent by (output started at /home/hsn/public_html/forum/cache/skin_cache/cacheid_1/skin_topic.php:909) in /home/hsn/public_html/forum/admin/sources/classes/output/formats/html/htmlOutput.php on line 137

Warning: Cannot modify header information - headers already sent by (output started at /home/hsn/public_html/forum/cache/skin_cache/cacheid_1/skin_topic.php:909) in /home/hsn/public_html/forum/admin/sources/classes/output/formats/html/htmlOutput.php on line 141
2001 - Written Paper - Q8(a)(i) - HSN forum

Jump to content


2001 - Written Paper - Q8(a)(i)


6 replies to this topic

#1 david__taylor

    Good Effort

  • Members
  • PipPipPip
  • 54 posts
  • Gender:Male

Posted 26 May 2005 - 08:27 AM

2001 Section B

This question asks to draw the structural formula of C3H603.
Q8(a)(i) Does it matter what branch you put the Oh on e.g, why can it not be:

..............................................H...H...O(Double Bond with C)
........................................H - C - C - C - OH
.............................................OH..H

The answer is:
.............................................H...H...O(Double Bond with C)
.......................................H - C - C - C - OH
............................................H....OH............


#2 Shaun

    Fully Fledged Genius

  • Moderators
  • PipPipPipPipPipPipPip
  • 1,571 posts
  • Gender:Not Telling
  • Gender:Not Telling

Posted 26 May 2005 - 08:36 AM

Nope doesn't matter!

#3 david__taylor

    Good Effort

  • Members
  • PipPipPip
  • 54 posts
  • Gender:Male

Posted 26 May 2005 - 11:35 AM

Nice one, thanks.

#4 Ally

    HSN Legend

  • Moderators
  • PipPipPipPipPipPipPipPip
  • 2,912 posts
  • Interests:Just finished 1st year at uni studying medicine.
  • Gender:Male

Posted 26 May 2005 - 08:44 PM

Hmmm... the answer is the second one.

This one:

user posted image

The clue is that in the question it says '2 - hydroxypropanoic acid'. Therefore, the -OH group should be attatched to the 2nd C atom.

#5 david__taylor

    Good Effort

  • Members
  • PipPipPip
  • 54 posts
  • Gender:Male

Posted 27 May 2005 - 08:31 AM

Orite, I didn't read the question properly then, thanks ally.

#6 YIC

    Fully Fledged Genius

  • Members
  • PipPipPipPipPipPipPip
  • 1,976 posts
  • Location:UK
  • Interests:My interests
  • Gender:Male

Posted 27 May 2005 - 11:48 AM

I found that 2001 paper really hard compared to other chemistry years and prelims, etc. Does anyone agree?

#7 david__taylor

    Good Effort

  • Members
  • PipPipPip
  • 54 posts
  • Gender:Male

Posted 27 May 2005 - 12:52 PM

Yeh i agree, I got 67% ish by my marking and for me that is not very good, I was also using the textbook for some of the questions lol. Doh.





1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users