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Offline IGCSE nightmare

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Chem 12
« on: June 10, 2010, 09:31:32 am »
How did you think it was?
I thought we needed some more time, because some questions were difficult :-\
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elemis

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Re: Chem 12
« Reply #1 on: June 10, 2010, 09:36:57 am »
NO DISCUSSIONS OF EXAM DETAILS UNTIL 24 HOURS HAVE PASSED !!!

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Offline moon

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Re: Chem 12
« Reply #2 on: June 10, 2010, 06:48:32 pm »
ya, that's true :-\
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Offline IGCSE nightmare

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Re: Chem 12
« Reply #3 on: June 11, 2010, 10:28:30 am »
24 Hours are over, can we discuss now?
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nid404

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Re: Chem 12
« Reply #4 on: June 11, 2010, 10:35:25 am »
yes you can
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Offline IGCSE nightmare

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Re: Chem 12
« Reply #5 on: June 11, 2010, 02:43:55 pm »
What was the answer for the enthalpy change question, question 5 and the last one, the reflux?
And SO2 being used as a food preservative and the radicals that can form?
And the hyroxide  concentration in nucleophilic substituition ....?
And is Ammonia with a haloalkane a nucleophilic substituition?
And that's it :-D
LOL
Thanks in advance :)
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Offline leebux101

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Re: Chem 12
« Reply #6 on: June 11, 2010, 03:21:14 pm »
i did as follows :
enthalpy change - c
last question - b
for so2 , i think there were two options - probably b
dont noe abt radicals
yes ammonia woth haloalkane is nucleophillic substitution

PS - i gave p-11
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Offline IGCSE nightmare

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Re: Chem 12
« Reply #7 on: June 14, 2010, 07:23:23 am »
Anyone got any different answers?
I want to enjoy my Summer with a good start  :'(
I got none of these correct except for the last one
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