ORGO LAB FINAL

What is the most common stationary phase in TLC

Silica gel

Silica gel is considered to be

polar and acidic

main purpose of TLC

to determine compound purity and monitor by TLC

In TLC, the solvent that moves up the plate

mobile phase

Rf formula

distance traveled by the compound / distance traveled by the solvent

what reagents are used for green alkene dibromination

sodium bromide and sodium perborate in acetic acid

why is molecular bromine undesirable

it is corrosive, volatile, and causes severe burns

pressure build up during green bromination

acetic acid reacting with sodium bicarbonate

separation of compounds in gas chromatography is primarily based on differences in

volatility and interaction with stationary phase

primary purpose of coupling gas chromatography with mass spec

to physically separate compounds and then identify w mass spec

what is the purpose of the Hickman still

to collect and concentrate the condensed product

what is the RDS in an E1 dehydration reaction

carbocation formation via water loss

What does the HOMO–LUMO gap represent in a molecule?

The minimum energy required to excite an electron

Why does anthracene react preferentially at the 9,10-positions during the Diels–Alder reaction?

Reaction here preserves aromaticity in two rings