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AQA CHEM5 A2 Chemistry - 19th June 2013

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Original post by esl_94
Sorry for the delay - I think these are Questions 6 and 7 :smile:14.jpg15.jpg16.jpg17.jpg
Again if I have missed any pages just let me know :smile: I seem to have 18 photos on my phone and have put 17 up here but I can't work out which I have missed!


The question missed is 2d x

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Original post by nimbusquaffle
I think that below 500K ΔG is negative so reaction becomes feasible but I may be wrong :/


Nope can't be because it is a negative gradient so as x increases y decreases so if x is lower, y is higher, it would probably help if you did maths out of curiosity do you do maths?
how do you work out 1d
Reply 3203
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esl_94
Original post by alex7892
The question missed is 2d x

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There is only up to 2c? x
i got a totally different answer help please
Original post by connolrj01
Nope can't be because it is a negative gradient so as x increases y decreases so if x is lower, y is higher, it would probably help if you did maths out of curiosity do you do maths?


I do, but apparently I've failed that also
Original post by nimbusquaffle
I do, but apparently I've failed that also


Did you have c4 yesterday?
I neeed 97 UMS to get an A overall.. Do you think that 72 willcbe enough? The grade boundary must be one of the lowest it has ever been? Im guessing ariund 69 for an A? Any re-assurance/ replies would be amazing! 97 ums will only be one mark over the a boundary. Thank you very much guys!!
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Original post by connolrj01
Did you have c4 yesterday?


no AQA on the 10th. It was horrendous!
Guys come on grade boundary predictions taking into account the difficulty of the paper

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Original post by alex7892
I neeed 97 UMS to get an A overall.. Do you think that 72 willcbe enough? The grade boundary must be one of the lowest it has ever been? Im guessing ariund 69 for an A? Any re-assurance/ replies would be amazing! 97 ums will only be one mark over the a boundary. Thank you very much guys!!
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think A will be 70 raw marks, you should be safe if you calculations correct! good luck :biggrin:
Reply 3211
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mulac1
Original post by esl_94
Sorry for the delay - I think these are Questions 6 and 7 :smile:14.jpg15.jpg16.jpg17.jpg
Again if I have missed any pages just let me know :smile: I seem to have 18 photos on my phone and have put 17 up here but I can't work out which I have missed!


I think the first part of the last question (Q8) is missing
thanks
Reply 3212
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Az_016
8
isnt the aluminium with NH3 this equation:

[AL(H20)6]3+ + 4NH3 ---------> [AL(H20)2(OH)4]1- + 4NH4+
Reply 3213
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esl_94
19.jpg
Original post by mulac1
I think the first part of the last question (Q8) is missing
thanks
Reply 3214
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mulac1
sorry.. haha the page after that as well isn't there - after that its all up :smile: thank you once again
Reply 3215
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esl_94
Original post by mulac1
sorry.. haha the page after that as well isn't there - after that its all up :smile: thank you once again

I will get there in the end - my brain isn't quite functioning after that awful exam!
18.jpg
Reply 3216
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mulac1
sorry... its the page before that .. I deserve to be negged for this :wink:
Reply 3217
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esl_94
Original post by mulac1
sorry... its the page before that .. I deserve to be negged for this :wink:

The last part of question 7?
Reply 3218
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mulac1
no - the 2nd page of question 8 :smile:
Reply 3219
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esl_94
Original post by mulac1
no - the 2nd page of question 8 :smile:

this one? 20.jpg

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