Propose a structure for an aromatic hydrocarbon, C9H12, that can
form only one C9H11Br product on...
Propose a structure for an aromatic hydrocarbon, C9H12, that can
form only one C9H11Br product on substitution of a hydrogen on the
aromatic ring with bromine.
What is the expected aromatic
hydrocarbon reactivity of these compounds and why ? (which is the
fastest and which is the slowest and why?) a bromine solution in
acetic acid was added to these compound.
Toluene , Acetanilide , Benzhydrol, Anisole, Diphenyl ether
A 4.50 mL sample of a 0.100 M solution of an aromatic
hydrocarbon dissolved in hexane is excited with a flash of light.
The aromatic compound emits 19.3 J of energy at an average
wavelength of 379 nm. What percentage of the aromatic compound
molecules emitted a photon? Please Help, Thanks
Naphthalene is a volatile organic compound (VOC) as well as the
lightest polycyclic aromatic hydrocarbon (PAH). Inhalation of
naphthalene may cause respiratory and neurological effects among
humans. It is classified as a possible human carcinogen. A recent
monitoring program shows that the average concentration of
naphthalene in air is 4.5 µg/m3 in indoor air. Assess the
non-cancer hazard and cancer risk assuming people continuously
inhale naphthalene at this concentration. Toxicological information
of naphthalene: RfC = 3 µg/m3 Unit risk =...
Benzo[a] pyrene, or B[a]p, a polycyclic aromatic hydrocarbon, is
measured in a wastewater lagoon 2.5 hr after a release at a
concentration of 3ppb. Half life of B[a]p is 1hr via direct
sunlight exposure.
a.Based on its structure, explain why light exposure can affect
B[a]p
b.If only direct photodegradation is the only degradation
process occurring, what is the initial concentration of B[a]p in
the lagoon? Assume a first order kinetics
Benzo[a] pyrene, or B[a]p, a polycyclic aromatic hydrocarbon, is
measured in a wastewater lagoon 2.5 hr after a release at a
concentration of 3ppb.
Half life of B[a]p is 1hr via direct sunlight exposure.
a.Based on its structure, explain why light exposure can affect
B[a]p
b.If only direct photodegradation is the only degradation
process occurring, what is the initial concentration of B[a]p in
the lagoon? Assume a first order kinetics
Propose a nucleophilic aromatic substitution mechanisms for the
reactions of
a) 2,4-dinitrochlorobenzene + sodium methoxide
b) 2,4-dimethylchlorobenzene + sodium hydroxide, 350 degrees
C
c) p-nitrobromobenzene + methylamine
d) 2,4-dinitrochlorobenzene
3,4-benzopyene (BP, C20H12) is a toxic aromatic hydrocarbon
frequently found in polluted air. 5.0 liters of air (at standard
temperature and pressure) is bubbled through 10 ml of dilute
sulfuric acid, capturing the BP. 3.0 ml of this solution is diluted
to 10 ml, and this final solution gives a fluorescence intensity of
205 (arbitrary units). A blank gave an intensity of 35 (same
units). A solution containing 0.75 mg of BP per ml is prepared and
1.5 ml of...
Select a Company you are familiar with, then propose a product
development process for one of its products or services.
PLEASE NOTE i want it with example explained completely
according to the product development other than dominos pizza
garlic bread or sony tv or ikea
:(((
Nitration of an aromatic ring involves an electrophilic
substitution reaction. Draw the structure of the electrophile that
attacks the aromatic ring and the intermediate formed after
attachment of the electrophile to the ring. Be sure to show formal
charges.