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Chemistry Unit 2 Edexcel, Exam- 23rd May 2012

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Reply 80
Avatar for Arusa01
Arusa01
Original post by Otlichno
I'm doing it with the A-levels. :biggrin:


Oh I see..
Reply 81
Avatar for shahlakh
shahlakh
13
oh come on!!! i know u guys r gonna make out. i know u all r going to get A. :smile: just chill and be cool :smile: Belief matters a lot :biggrin: work as much hard as u can :smile:
(edited 11 years ago)
Guys,
Do we have to know about the mechanisms of nucleophilic substitution of halogenoalkane as SN1 and SN2?
Reply 83
Avatar for Arusa01
Arusa01
Original post by The_New_Guy
Guys,
Do we have to know about the mechanisms of nucleophilic substitution of halogenoalkane as SN1 and SN2?


No I don't think so. I don't think that's on the spec. :s-smilie:
Reply 84
Avatar for Arusa01
Arusa01
Original post by shahlakh
oh come on!!! i know u guys r gonna make out. i know u all r going to get A. :smile: just chill and be cool :smile: Belief matters a lot :biggrin: work as much hard as u can :smile:


Lol - unit 2 sucks.
Reply 85
Avatar for avipsita
avipsita
Original post by Arusa01
No I don't think so. I don't think that's on the spec. :s-smilie:


our teacher taught it to us anyways ... its better to learn it ....
Original post by Arusa01
Lol - unit 2 sucks.


what you mean? is it easy? :s-smilie:
Reply 87
Avatar for Arusa01
Arusa01
Original post by UserInvalid
what you mean? is it easy? :s-smilie:


Some bits are ok, and then theres titrations :s-smilie: grrr.

Are you not doing the exam?
Original post by Arusa01
Some bits are ok, and then theres titrations :s-smilie: grrr.

Are you not doing the exam?


Yeh doing it, I am going over the book, right now I am on redox chapter, just covering things again, and I am sure by today I will have the book covered and start cracking the past papers tomorow.
Sn1, Sn2, and a comparison between them. i wouldnt put too much emphasis on learning them. but it wouldnt hut to take a look at them, if you have time.

http://www.youtube.com/watch?v=3e0ScEkz8oU&feature=relmfu

http://www.youtube.com/watch?v=Z_85KXnBSYc&feature=relmfu

http://www.youtube.com/watch?v=8J0ys3z5wzo
Reply 90
Avatar for Babyblue
Babyblue
1
somebodyyyyyyy. 2012 jan pastpaper and ms. please? :biggrin:
Reply 91
Avatar for Arusa01
Arusa01
Original post by UserInvalid
Yeh doing it, I am going over the book, right now I am on redox chapter, just covering things again, and I am sure by today I will have the book covered and start cracking the past papers tomorow.


Well good luck :smile:
http://www.mediafire.com/?emha8hc8xcyzo
THE LINK TO JAN 2012 unit 2 QP AND MS
Original post by Babyblue
somebodyyyyyyy. 2012 jan pastpaper and ms. please? :biggrin:


http://www.mediafire.com/?emha8hc8xcyzo there u go
Reply 94
Avatar for Arusa01
Arusa01
Original post by afserrahuman
http://www.mediafire.com/?emha8hc8xcyzo
THE LINK TO JAN 2012 unit 2 QP AND MS


it doesn't open :s-smilie:
Original post by arusa01
it doesn't open :s


yolo loooooooooool
Reply 96
Avatar for jadez_94
jadez_94
Original post by avatar 10
Does anyone how how to do this question-
The enthalpy change of neutralization of an acid by an alkali is measured by adding
10.0 cm3 of hydrochloric acid to 10.0 cm3 of sodium hydroxide. 10.0 cm3
pipettes with an accuracy of ±0.04 cm3 are used to measure out both solutions.
The overall percentage error in measuring the total volume of the reaction mixture is.... i keep getting +and -0.8% when its meant to be + and -0.08% :confused::confused:


I think because you're measuring the amount in the pipette twice you're twice likely to get the error as +/-0.04 x2=+/-0.08
Reply 97
Avatar for Arusa01
Arusa01
Original post by Future Medics
yolo loooooooooool


Hahaa, Missed you man :smile: x
Original post by jadez_94
I think because you're measuring the amount in the pipette twice you're twice likely to get the error as +/-0.04 x2=+/-0.08


0.8/10 ...
Original post by Arusa01
Hahaa, Missed you man :smile: x


Hahahahaha Yolo

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