IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => GCE AS & A2 Level => Queries => Topic started by: sweetie on June 01, 2010, 01:03:33 pm

Title: chem 21 Discussion
Post by: sweetie on June 01, 2010, 01:03:33 pm

so, i guess 24 hrs have passed, lets discuss da paper!!!

lemme start, wat waz the ans. 4 how many COOH were in the polycarboxylic acid????

Title: Re: chem 21 Discussion
Post by: amrgo on June 01, 2010, 03:00:13 pm

I GOT IT 2 carbooxylic acid as so 3/4 of my friends got it 2 :D

Title: Re: chem 21 Discussion
Post by: leebux101 on June 01, 2010, 03:21:26 pm

yup i got 2 carboxylic acid groups too!

Title: Re: chem 21 Discussion
Post by: moon on June 01, 2010, 06:01:48 pm

ya, I wrote it the same 2 carboxylic acid.

Title: Re: chem 21 Discussion
Post by: sweetie on June 01, 2010, 06:04:42 pm

me too i got 2  :)

nd wat did u write for why reaction 1 needs heat while 2 doesnt???
i wrote because the hal. alkane had stronger induced dipole forces than HCl because it has a higher proton no.?????? ::)

Title: Re: chem 21 Discussion
Post by: ketone on June 04, 2010, 12:20:24 pm

u r rite sweetie

Title: Re: chem 21 Discussion
Post by: leebux101 on June 04, 2010, 03:23:11 pm

i wrote abt intermediate compounds and activation energy...