Edexcel AS Chemistry: 4th June 08

we shouldn't really dwell on this though.
i think they'll definitely accept ours (ethene) - its on the bloody specification no two ways about it!
and the ethyne one as ppl are suggesting too!
both seem right.
i asked my chem teacher and he automatically though ethene considering we've only done AS level chemistry and our knowledge isn't as advanced.
But whatever really!
it was a whole week ago - forget that question
A2 on the other hand looks tough so lets focus on that and our jan modules not what we've done already.
ok guys rant over!
lol

Good man, ive started teaching myself electrode potentials already, its a bit confusing o_O

Medicine man, wouldn't bromoethane be one of the compound formed too? Considering the reaction might not go to completion..

I'm so glad i retook unit 2 this time..you guys will love the temperature and pressure condition for all the industrial processes..

Yeah but that was before the current syllabus. I've seen that paper before and it had all this Unit 4/5 stuff that I've never seen before.

Eitherway, the answer is bromoethene or ethene from what we agreed.

what about the species being oxidised?
it was Cl2 to NaOCl
and Cl2 to NaCl
for part ii) it was (100/35.5)*24 = 67.6dm^3
mass/molar mass to find moles
then as 1 mole occupies 24dm^3 find out how many in 2.18moles which is 67.6dm^3

it wasnt even an edexcel paper, but oh well i dunno why people are concvinced? it was an AQA paper for a number of reasons but anyway. Yes i know electrode potentials is in unit 5 but i was looking at transition metals out of interest and it talked about electrode potentials so i thought it be good if i taught myself

@Adel the overall grade boundaries change so you can never have an exact number

what about the species being oxidised?
it was Cl2 to NaOCl
and Cl2 to NaCl
for part ii) it was (100/35.5)*24 = 67.6dm^3
mass/molar mass to find moles
then as 1 mole occupies 24dm^3 find out how many in 2.18moles which is 67.6dm^3