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Topic: Please help GAMSAT question! optical isomers  (Read 3366 times)

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Offline Charliejl82

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Please help GAMSAT question! optical isomers
« on: September 12, 2010, 12:00:56 PM »
Hi

Could someone help me with question 1 of the attched sheet?

I don't understand what the D means mid way through the formula, nor for question 2 what the D means?

Thanks

Charlotte
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Offline Jorriss

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Re: Please help GAMSAT question! optical isomers
« Reply #1 on: September 12, 2010, 12:23:41 PM »
D is a hydrogen Isotope. Hydrogen-2. It's the only instance I know where a separate symbol is used to indicate an isotope.
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Offline Charliejl82

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Re: Please help GAMSAT question! optical isomers
« Reply #2 on: September 12, 2010, 12:30:53 PM »
arrr I see! Thanks so much, so wouldl the answer for 2 be c?

thanks very much!

oh and the answer for 1 would be d?
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Offline Jorriss

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Re: Please help GAMSAT question! optical isomers
« Reply #3 on: September 12, 2010, 12:55:27 PM »
At a glance, looks right.
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Offline Charliejl82

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Re: Please help GAMSAT question! optical isomers
« Reply #4 on: September 12, 2010, 01:05:16 PM »
Thanks, really appreciate your help.
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Offline MissPhosgene

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Re: Please help GAMSAT question! optical isomers
« Reply #5 on: September 12, 2010, 01:54:39 PM »
D is deuterium. Good luck with the test!.
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Stereograms of the 32 crystallographic point groups: little bike wheels of cold, hard, pure rationality.
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