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Chemistry: Post your doubts here!

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Ok
N how do we find if we have to add up all energies given in Born haber cycle or subtract them to find lattice energy ?
You should know what energies to use in the born-haber cycle. And to find lattice energy,
Latt energy change = Enthalpy change of formation - (the sum of rest of the energies you use in the cycle)
You will understand better if you try a past paper question on this.
 
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You should know what energies to use in the born-haber cycle. And to find lattice energy,
Latt energy change = Enthalpy change of formation - (the sum of rest of the energies you use in the cycle)
You will understand better if you try a past paper question on this.
Hmm
Is it not like lattice energy and the electron affinity= rest of energies on the left side?
 
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Hmm
Is it not like lattice energy and the electron affinity= rest of energies on the left side?
Nope ... don't get yourself confused like that with a particular formula. If you draw the Born-Haber cycle (I hope you know how to?) you will see what needs to be added and subtracted with the arrows ... and this cycle is just a more advanced version of Hess'law so you can can just take the different routes and well, you know, calculate whatever energy you want.

Thanks buddy tho i do edexcel not cie :)
If you can, find a question in edexcel and do ... or it wouldn't hurt to do this as well ... just practice so you can understand
 
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Nope ... don't get yourself confused like that with a particular formula. If you draw the Born-Haber cycle (I hope you know how to?) you will see what needs to be added and subtracted with the arrows ... and this cycle is just a more advanced version of Hess'law so you can can just take the different routes and well, you know, calculate whatever energy you want.


If you can, find a question in edexcel and do ... or it wouldn't hurt to do this as well ... just practice so you can understand
Yep thankfully i do know how to draw it xD
Yep i did one of the qs in my book ur way
It works
Thanks :)
 
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