sublimation

The vapor pressures of 1,2-diphenylethane, p-dichlorobenzene, and 1,3,5-trichlorobenzene are 0.06, 11.2, and 1.4 torr, respectively, at their melting point (52-54 degrees C). Which compound is likely to be sublimed most rapidly at a reduced pressure of 15 torr and a temperature of 40 degrees Celcius?

weight of water

Calculate the weight of water required to steam distill 500mg of bromobenzene at 95 degrees Celsius. the vapor pressure of water at this temperature is 640 torr, bromobenzene is 120 torr.

how to determine a limiting reagent and percent yield

how to determine a limiting reagent and percent yield

bromination of trans-cinnamic acid

I recently did an experiment where the addition of bromine to trans-cinnamic acid gives a dibromide with two stereocenters (chiral centers). Thus, there were four stereoisomers possible (see figures on page 136 on attachment). According to the melting points of my product, I ended up with the racemic mixture (2R,3S) and (2S,3R), erythro diastereomer (see attachment). EVERYTHING I have read points to the idea that this should be an anti addition, but the teaching assistant has just told me, no, this is a syn addition since we have ended up with the erythro diastereomer. How can this be? All the literature says that when a bromonium ion is formed in the bromination of an alkene, this is an... click for more

Reactions

What product would you expect to obtain from the reaction of one equivalent of propanol with phthalic anhydride?