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
kompoz [17]
3 years ago
5

Which extraction procedure will completely separate an amide from the by-product of the reaction between an amine and excess car

boxylic acid anhydride?
Chemistry
2 answers:
sweet-ann [11.9K]3 years ago
6 0

Answer: A. Add 0.1M NaOH to quench unreacted anhydride. Then add diethyl ether to separate the layers. The amide can be obtained from the ether layer by evaporating the solvent.

The options are

A) Add 0.1 M NaOH to quench unreacted anhydride. Then add diethyl ether and separate the layers. The amid e can be obtained from the ether layer by evaporating the solvent

B) Add 0.1M Hal to quench unreacted anhydride. Then add diethyl ether and separate the layers. The amide can be obtained from the ether layer by evaporating the solvent.

C) Add 0.1M NaOH to quench unreacted anyhyride. Then add diethyl ether and separate the layers. The amide can be obtained from the aqueous layer by neutralizing with HCl.

Explanation:

Extraction with aqueous base will hydrolyze and extract both the acidic carboxylic acid and the excess unreacted starting material to the aqueous layer, leaving the neutral amide in the ether layer.

DedPeter [7]3 years ago
4 0

Answer: You question seems not to be complete.

Complete Question:

Which extraction procedure will completely separate an amide from the by-product of the reaction between an amine and excess carboxylic acid anhydride?

A) Add 0.1 M NaOH to quench unreacted anhydride. Then add diethyl ether and separate the layers. The amid e can be obtained from the ether layer by evaporating the solvent

B) Add 0.1M Hal to quench unreacted anhydride. Then add diethyl ether and separate the layers. The amide can be obtained from the ether layer by evaporating the solvent.

C)Add 0.1M NaOH to quench unreacted anyhyride. Then add diethyl ether and separate the layers. The amide can be obtained from the aqueous layer by neutralizing with HCl.

Explanation:The extraction procedure to use is A.

Add 0.1 M NaOH to quench unreacted anhydride. Then add diethyl ether and separate the layers. The amide can be obtained from the ether layer by evaporating the solvent

This is because the byproduct of the reaction would give an acidic carboxylic acid and unreacted starting material would also be acidic. Therefore, Extraction with aqueous base is necessary which will hydrolyze and extract both of these into the aqueous layer, leaving the neutral amide in the ether layer.

You might be interested in
if a continental polar air mass is moving across the United States , what will likely happen to the regions of the country that
krek1111 [17]

Answer:

the same thing that happens to United states will happen to other regions

Explanation:

5 0
3 years ago
How do you know the correct number of significant figures to include in an answer?
bogdanovich [222]

Answer:

Explanation:

  1 Non-zero digits are always significant.

  2 Any zeros between two significant digits are significant.

  3 A final zero or trailing zeros in the decimal portion ONLY are significant.

4 0
2 years ago
QUICK PLEASE!!!
Assoli18 [71]
Answer. Answer: By adding more carbon dioxide to the atmosphere, the atmosphere becomes more "closed" to energy passing through it, absorbing more. Therefore, thermal energy that once would have been allowed to escape into space is instead absorbed by carbon dioxide and used to heat the Earth. So it’s B
4 0
3 years ago
Read 2 more answers
Which is an example of an exothermic process?
LUCKY_DIMON [66]

I think it's E. heating of water

Because exothermic process discharges heat, causing the temperature of the prompt environment to rise

Please correct me if I'm wrong!! I'd be happy to fix it!! :)

6 0
3 years ago
Homeostasis is the balance between your internal and external environments. We
topjm [15]

Answer:

They are already matched for you. It goes

1.

2.

3.

in the order of the questions.

8 0
3 years ago
Other questions:
  • In a nuclear reaction, the energy released is equal to 5.4 x 1015 joules. Calculate the mass lost in this reaction. (1 J = 1 kg
    11·2 answers
  • What is measured in mercury
    14·2 answers
  • Why does molasses have a higher viscosity than water?
    8·1 answer
  • State hess's law.how is it used
    6·2 answers
  • Need help please ? I don’t understand nothing that much
    8·2 answers
  • Predict the species that will be oxidized first if the following mixture of molten salts undergoes electrolysis:
    11·1 answer
  • What is the electron configuration of (Si) in noble gas notation
    9·2 answers
  • The maximum energy of photo electrons (increases or decreases or remains constant) with increasing frequency and (increases or d
    6·1 answer
  • Hg + O2 --> HgO reaction
    9·1 answer
  • Which of the following could be the pH of an extremely acid solution, such as that in a car battery?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!