1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mademuasel [1]
3 years ago
8

Aldehydes and ketones are converted into alkenes by means of a direct nucleophilic addition called the Wittig reaction.

Chemistry
1 answer:
zubka84 [21]3 years ago
4 0

Answer:

The given statement- Aldehydes and ketones are converted into alkenes by means of a direct nucleophilic addition called the Wittig reaction, is<u> True.</u>

Explanation:

The Wittig reaction converts aldehydes and ketones into alkenes through a simple nucleophilic addition. A triphenylphosphorine ylide, also known as a phosphorane, reacts with an aldehyde/ketone to produce an oxaphosphetane, a four-membered cyclic intermediate. Instead of being isolated, the oxaphosphetane decomposes spontaneously to release triphenylphosphine oxide and an alkene.

In an SN2 reaction, triphenylphosphine, a good nucleophile, reacts with a primary alkyl halide, followed by deprotonation of the carbon with a solid base, such as butyllithium, to form the ylide. In the product alkene, the carbonyl carbon and the carbon initially bound to the halogen become two carbons with a double bond.

The Wittig reaction's true worth lies in its ability to produce an alkene with a predictable structure, as the C=C bond forms exactly where the C=O bond did in the reactant, with no isomers (other than E/Z isomers) forming.

<u>Hence , the correct option is (A) True.</u>

You might be interested in
Examples of electromagnetic wave
dlinn [17]

Answer:

Believe it or not our the light we see "visible light" is an example of electromagnetic wave. other examples include microwaves, radio waves, infrared, ultraviolet, x-rays, and gamma rays.

Explanation:

3 0
3 years ago
In which example is matter changing
just olya [345]
A) heating a pan of water until the water is all gone because then it would change from a liquid top a gas.
6 0
3 years ago
Does food cool faster after being in the microwave or being on the stove? ​
Simora [160]

Answer:

microwave...i think ._.

5 0
2 years ago
The pressure in a car tire is 198 kPa at 27°C. After a long drive, the pressure
AlekseyPX

Answer : The temperature of the air in the tire is, 341 K

Explanation :

Gay-Lussac's Law : It is defined as the pressure of the gas is directly proportional to the temperature of the gas at constant volume and number of moles.

P\propto T

or,

\frac{P_1}{T_1}=\frac{P_2}{T_2}

where,

P_1 = initial pressure = 198 kPa

P_2 = final pressure = 225 kPa

T_1 = initial temperature = 27^oC=273+27=300K

T_2 = final temperature = ?

Now put all the given values in the above equation, we get:

\frac{198kPa}{300K}=\frac{225kPa}{T_2}

T_2=340.9K\approx 341K

Therefore, the temperature of the air in the tire is, 341 K

5 0
3 years ago
Is an example of the carbon cycle occurring slowly?(1 point)
o-na [289]

Decomposition is a part of the carbon cycle that occurs slowly hence  movement of carbon dioxide into the atmosphere when bacteria decomposes dead matter is a slow part of the carbon cycle.

<h3>What is the carbon cycle?</h3>

The carbon cycle is part of the biogeochemical cycles that exist in nature. It refers to the movement of carbon in the ecosystem. The carbon cycle cuts across the air, the land and the water bodies.

The process in the carbon cycle that occurs slowly among the options is the movement of carbon dioxide into the atmosphere when bacteria decomposes dead matter.

Learn more about carbon cycle: brainly.com/question/1627609

7 0
2 years ago
Other questions:
  • 04-10 A power plant burns 100 metric tons of coal per day with a sulfur content of 5%. The coal contains 3% ash (noncombustible
    6·1 answer
  • How many moles are in 1.204 x 10 to the 24th atoms of carbon
    13·1 answer
  • Calcium lon<br> Protons:<br> Neutrons: 20<br> Electrons:<br> Mass:<br> *it’s an ion*
    10·1 answer
  • How did I get the sand out the mixture ?
    12·2 answers
  • One isotope of carbon (C) has exactly the same mass number and atomic mass since it was used as the definition of the atomic mas
    6·1 answer
  • What did electrons from the ionized air do to the oil drops?
    6·2 answers
  • Magnesium reacts with oxygen gas to form magnesium oxide. Which of the following represents the balanced chemical equation?
    9·2 answers
  • If variable A decreases, how will variable B respond?
    13·1 answer
  • What are isotopes used for in chemistry
    15·1 answer
  • If there was an airplane that went 2,000 miles in 3.5 hours. Find the average speed
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!