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
2003 Past Paper - HSN forum

Jump to content


2003 Past Paper


1 reply to this topic

#1 Scott2008

    Newbie

  • Members
  • Pip
  • 1 posts
  • Gender:Male

Posted 24 April 2008 - 09:08 PM

Q10 ©

0.4g of I2 is dissolved in 10cm3 of KI(aq) and 10cm3 CHCl3(l).
Calculate the concentration of iodine in g l-1, contained in CHCl3(l).


I've tried doing it by calculating n = m/gfm then c = n/v
Any suggestions, let me know. It's probably really simple and i'm not seeing what to do.
Cheers, Scott. smile.gif


#2 Marcus

    Site Swot

  • Members
  • PipPipPipPip
  • 147 posts
  • Location:Aberdeen
  • Interests:Guitar - Passed my grade 6 :D :D<br />Write computer programs - won Heriot-Watt programming challenge 2006 and 2007 :D<br />
  • Gender:Male

Posted 25 April 2008 - 03:13 PM

QUOTE(Scott2008 @ Apr 24 2008, 10:08 PM) View Post
Q10

0.4g of I2 is dissolved in 10cm3 of KI(aq) and 10cm3 CHCl3(l).
Calculate the concentration of iodine in g l-1, contained in CHCl3(l).

I've tried doing it by calculating n = m/gfm then c = n/v
Any suggestions, let me know. It's probably really simple and i'm not seeing what to do.
Cheers, Scott. smile.gif


well it is not going to use any of your usual equations, as it is looking for g l-1 not mol l-1, it is just going to be number of grams of iodine/ over volume of solution
=-=-=Marcus=-=-=





2 user(s) are reading this topic

0 members, 2 guests, 0 anonymous users