Ibuprofen is a common non-steroidal anti-inflammatory drug (NSAID). It contains a benzene ring and a carboxylic acid at the end of one of the branches.
Deduce the number of resonance structures possible in the deprotonated form of ibuprofen.
Explain why, despite the high electron density in the triple bond, the triple bonded nitrile group is a more stable structure than the following alternative Lewis structure:
It is possible for the chlorine radical to undergo a termination reaction where it joins with another organic radical available, and can reform the original molecule:
Cl• (g) + CCl2F• (g) → CCl3F (g)
Explain why this is not a solution to the depletion of ozone.
Compounds containing iodine and carbon are usually broken down lower in the atmosphere, beneath the ozone layer. Suggest why iodocarbons are not popular alternatives to CFCs.
