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A2 edexcel chemistry unit 4 2016

How did everyone find the a2 edexcel unit 4 chemistry exam today?
Also any chance someone could make an unofficial mark scheme please? thank you
Reply 1
Original post by braino
How did everyone find the a2 edexcel unit 4 chemistry exam today?
Also any chance someone could make an unofficial mark scheme please? thank you


I thought it was alright. it had a different structure though. how did U find it
Reply 2
[QUOTE="Nadela;65778331"]I thought it was alright. it had a different structure though. how did U find it[/QUOTE


yeah...so many 5 markers!


you know for the rate q about order with respect to Br-.... did you put zero order or first order?? x
Reply 3
[QUOTE="braino;65781209"]
Original post by Nadela
I thought it was alright. it had a different structure though. how did U find it[/QUOTE


yeah...so many 5 markers!


you know for the rate q about order with respect to Br-.... did you put zero order or first order?? x


I put zero order as it was a straight line with respect to time
[QUOTE="Twin-v;65782219"]
Original post by braino


I put zero order as it was a straight line with respect to time


But it was a graph of 1 over time against concentration giving a straight gradient so it was first order
Reply 5
Oh yeah I agree 😑
Reply 6
[QUOTE="lolzbots2009;65783075"]
Original post by Twin-v


But it was a graph of 1 over time against concentration giving a straight gradient so it was first order


So the following marks for the rate equation and units for k will be lost too? Or will I get ecf?
You should get ecf don't worry :smile:
Reply 8
Original post by flipper9182
You should get ecf don't worry :smile:


Ecf was the case for a similar question in past paper, thanks!
Original post by Twin-v
Ecf was the case for a similar question in past paper, thanks!


Best of luck with the rest of your exams :smile:
Reply 10
it was first order cos it was rate (1/t) against volume graph
Reply 11
[QUOTE="braino;65781209"]
Original post by Nadela
I thought it was alright. it had a different structure though. how did U find it[/QUOTE


yeah...so many 5 markers!


you know for the rate q about order with respect to Br-.... did you put zero order or first order?? x


it was first order cos it was a rate(1/t) against volume graph
Original post by braino
How did everyone find the a2 edexcel unit 4 chemistry exam today?
Also any chance someone could make an unofficial mark scheme please? thank you


Any luck with finding the mark scheme?

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