This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Pericyclic reactions occur in a single step with the _____. a. formation of a radical b. formation ... (Read 106 times)

anjilletteb

  • Hero Member
  • *****
  • Posts: 569
on: Aug 23, 2018
Pericyclic reactions occur in a single step with the _____.
 a. formation of a radical
 b. formation of an ionic intermediate
 c. formation of a molecular ion
 d. formation of a transition state

Question 2

Why carbonyl groups of aldehydes and ketones on conjugation with carboncarbon double bonds show strong absorption in the ultraviolet spectrum?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kardosa007

  • Sr. Member
  • ****
  • Posts: 300
Reply #1 on: Aug 23, 2018
Answer to Question 1

d

Answer to Question 2

The presence of conjugation in aldehydes and ketones decreases the energy gap between filled and unfilled  orbitals. Hence, the strong absorption observed in the ultraviolet spectrum is because of the  to  transition.


anjilletteb

  • Member
  • Posts: 569
Reply 2 on: Aug 23, 2018
Great answer, keep it coming :)

mochi09

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Release of ordered water favors formation of an enzyme-substrate complex Release of ordered water favors formation of an enzyme-substrate complex
Processes of Lightning Formation: Leaders, Strokes, and Flashes Processes of Lightning Formation: Leaders, Strokes, and Flashes
The fire triangle and the fire tetrahedron For combustion to occur, three elements must be ... The fire triangle and the fire tetrahedron For combustion to occur, three elements must be ...
a and B Elimination reactions a and B Elimination reactions
Vast reserves of shale gas can be recovered through formation fracturing (“fracking”) Vast reserves of shale gas can be recovered through formation fracturing (“fracking”)
Some human traits controlled by a single gene Some human traits controlled by a single gene
Video: Fetal development - Weeks 9 to 38

For a complete list of videos, visit our video library