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2003 Past Paper - HSN forum

# 2003 Past Paper

### #1Scott2008

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Posted 24 April 2008 - 09:08 PM

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.

### #2Marcus

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Posted 25 April 2008 - 03:13 PM

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

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.

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=-=-=

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