if anyone has an idea what could have caused me to get an 8% yield and another girl to get none while the rest of the class got high yeilds.

16 years ago

16 years ago

this would be my O-chem lab. The TA didn't know and the lab professor said I should chalk it up to a learning experience, but I'm not sure

16 years ago

what I'm supposed to learn.

16 years ago

about purity of reagents, and evaporation of some components. What were the ingredients??

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16 years ago

penelope would know!

16 years ago

we treated meso-stilbene dibromide with strong base (KOH) in triethylene glycol at 190C, chilled it, added water, and chilled some more

16 years ago

to yield diphenylacetylene.

16 years ago

I doubt that purity would have been much of an issue since the entire class did used the same thing.

16 years ago

My temp did fluctuate, but I got it under control and heated the solution at the required temp for the full time.

16 years ago

would put it down to evaporation and gas escapes. Volatile things you're using.

16 years ago

I am no chemistry expert, and has no idea why your results differed. Apologies. Grumba, I am a mathematician cum bioinformatician!

16 years ago

penelope is like myself- I'm a medical/soc sciences statistician! But studied organic chem and biochem as part of medicine!

16 years ago

TheRandomMuse should investigate contamination with stilbene:en.wikipedia.org/wiki/Di...

16 years ago

I never thought to check wiki

16 years ago

a couple of ideas to research.