raeesahmed786
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Does anyone have some useful revision resources for unit 2 chem for edexcel? If so please post them below
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TSR Learn Together
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Hi there,

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DCMed96
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Anyone taking AS Edexcel Chemistry this summer Unit 1 and 2. How's preparation?
Fire me some questions!!
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blueynuey1
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which imf force is stronger temporary dipole-dipole interactions or permanent dipole-dipole interactions.

i've looked at a lot of sources and and they all say different things. the edexcel AS chemisrtry by Ann fullick and my teacher both say that permanent dipole are stronger than instantaneous whereas the edexcel AS chemistry by george facer and chemguide website say that instantaneous dipoles are stronger than permanent dipoles. So which do i believe ...

here is link to the chemguide's view on this: http://www.chemguide.co.uk/atoms/bon...ngths.html#top

can someone explain it to me preferably using the edexcel markscheme as i can't find it anywhere thanks!
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Crithappenz
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do we need to now about sn1 and sn2 for nucleophilic substitution in haloalkanes
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KHJ1
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(Original post by blueynuey1)
which imf force is stronger temporary dipole-dipole interactions or permanent dipole-dipole interactions.

i've looked at a lot of sources and and they all say different things. the edexcel AS chemisrtry by Ann fullick and my teacher both say that permanent dipole are stronger than instantaneous whereas the edexcel AS chemistry by george facer and chemguide website say that instantaneous dipoles are stronger than permanent dipoles. So which do i believe ...

here is link to the chemguide's view on this: http://www.chemguide.co.uk/atoms/bon...ngths.html#top

can someone explain it to me preferably using the edexcel markscheme as i can't find it anywhere thanks!

Permanent dipole is stronger due to polar bond strength...I think...always heard London forces were the weakest
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