Could someone possibly draw the Born Haber cycle of June 2010 paper and illustrate the answer? I don't understand them in the new papers. Which is weird!![]()
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AQA - Unit 5 - Energetics, Redox and Inorganic Chemistry watch
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Sparkly-Star
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- 23-06-2011 20:46
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- 23-06-2011 20:48
(Original post by jwest)
ahh ok thanks for that, so you get more molecules on products cos the reaction might be for example
[Cu(h20)6]2+ + [EDTA]4- ---> [Cu(EDTA)]2- + 6h20
2 molecules goes to 7 molecules hence the increase the entropy...is that along what you were saying?
It is a reversible reaction but the reverse reaction would make less particles, which means theres a decrease in entropy so its not very likely to occur. So you basically assume its only a forward reaction because the equilibrium is so far to the product side. Hope that helped. -
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- 23-06-2011 20:50
coolio, thats 3/4 marks out of 100 nailed....makes an A slightly more achieveable, i guess
entropy is just such a ***** when i try and thing about it all i remember is brian cox making sandcastles! -
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- 23-06-2011 20:52
(Original post by jwest)
coolio, thats 3/4 marks out of 100 nailed....makes an A slightly more achieveable, i guess
entropy is just such a ***** when i try and thing about it all i remember is brian cox making sandcastles! -
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- 945
- 23-06-2011 20:53
(Original post by jwest)
coolio, thats 3/4 marks out of 100 nailed....makes an A slightly more achieveable, i guess
entropy is just such a ***** when i try and thing about it all i remember is brian cox making sandcastles! -
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- 23-06-2011 20:55
Is it just me who finds the mark-scheme so fricking specific: bond pair, alternative route, covalent and molecular etc.?
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Sparkly-Star
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- 23-06-2011 20:56
(Original post by JK471993)
Is it just me who finds the mark-scheme so fricking specific: bond pair, alternative route, covalent and molecular etc.?The book content is pretty vague on this unit!
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- 23-06-2011 20:58
(Original post by JK471993)
Is it just me who finds the mark-scheme so fricking specific: bond pair, alternative route, covalent and molecular etc.? -
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- 23-06-2011 21:01
(Original post by a23m)
I think it maybe one of those things you just have to learn. Periodicity is immensely boring, theres not a lot of theory, just memory.
I'd suggest remembering it as...
ionic on the left of the periodic table (sodium and magnesium)
and
covalent on the right of the periodic table
Aluminium is a funny one though, its a bit of both! -
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- 23-06-2011 21:04
(Original post by Anon1993)
HahahaS'okay - i know the feeling
but ionic, ionic, both, giant covalent, simple, simple. .
Make up your own rhyme?
Okay got it, I just sung it to myself, hopefully I remember it! LOL thank you -
strawberry_cake
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- 23-06-2011 21:04
Hows everyone getting on??
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- 23-06-2011 21:05
(Original post by Sparkly-Star)
Out of all the units I find this one to be the most specific!The book content is pretty vague on this unit!
Thank god I only need a really low grade in this, im terrible at it! -
Arab_Empress
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- 23-06-2011 21:05
how about you? -
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- 23-06-2011 21:07
what sort of marks did people get on the jan 11 past paper?! i find it so hard! theres too many equations for this unit
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- 23-06-2011 21:07
(Original post by SashaLuLu)
what sort of marks did people get on the jan 11 past paper?! i find it so hard! theres too many equations for this unit -
alprescott1
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- 23-06-2011 21:10
heyy can anyone post the jan 11 paper and markscheme please?
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strawberry_cake
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- 23-06-2011 21:11
I think I'm gonna go through the spec now and go through the 'leftovers'. Chem5's boring me
How are you finding the papers?
The old spec were a lot easier then the new ones i think :/
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strawberry_cake
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- 23-06-2011 21:11
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Sparkly-Star
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- 23-06-2011 21:14
It's funny how I've not learnt about the perfect ionic model from my book.
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alprescott1
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- 23-06-2011 21:15
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