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Irina18 [472]
3 years ago
12

Draw a mechanism for this reaction. 5-hydroxypentanoic acid forms 2-oxanone in the presence of acid. draw all missing reactants

and/or products in the appropriate boxes by placing atoms on the canvas and connecting them with bonds. add charges where needed. electron flow arrows should start on an atom or a bond and should end on an atom, bond, or location where a new bond should be created.
Chemistry
1 answer:
Licemer1 [7]3 years ago
3 0

Answer: -

The first step involves protonation of the carbonyl oxygen.

After protonation, the Alcohol oxygen now attacks the carbon of the carbonyl.

Thus a six membered ring is formed with 5 carbon atoms and 1 oxygen atom. The 1st position carbon atom has 2 OH groups.

One of these gets again protonated.

This leaves as water. With the loss of the H+, there results a carbonyl at 1 position.

Thus 5-hydroxypentanoic acid forms a lactone or 2-oxanone in presence of acid.

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Is the answer B? Help
Masja [62]

Answer:

A

Explanation:

Hmm, so we have the following in the diagram

Pt(s)

Cl2(g)

Ag(s)

NaCl(aq)

AgNO3(aq)

Pt 2+, 4+, 6+  Though it states Pt is inert

Cl 2-

Ag 1+

Na 1+

NO3-

Anode definition: the positively charged electrode by which the electrons leave an electrical device.

Electrode definition: a conductor through which electricity enters or leaves an object, substance, or region.

Cations attracted to cathode pick up electrons

Anions attracted to anode release electrodes+

Reduction at Cathode (red cat gain of e)

Oxidation at Anode (ox anode loss of e)

So from the diagram we can see that the charge is being generated through the 2 metal plates.

So the answer is A, the anode material is Pt and the half reaction is 2Cl- = Cl2 + 2e-

7 0
3 years ago
Why is it important to use standard measurements and units in science
saul85 [17]

Unit' is the word used to describe how something is measured. When researching a question in science, we collect data, interpret it, and share the results with other scientists. A common measurement system allows us to make direct comparisons instead of having to know things like how much a certain animal weighs.

6 0
3 years ago
Powerful_____________________________ in nature, such as wind, temperature, and ice, can exert enough pressure to cause the wall
stich3 [128]

Answer:

I believe forces would be the word you are looking for.

Explanation:

I hope this is what you needed, have a great day! (;

3 0
3 years ago
Density differences in different materials are able to change the of a wave. A)Amplitude B)Crest C)Speed D)Trough​
Maurinko [17]

Answer:

C. Speed

Explanation:

Density differences in different materials are able to change the speed of a wave.

  • Wave speed is dependent on the frequency and wavelength of a wave.
  • As a wave travels from one medium to another, the speed of the wave changes.
  • Speed of a wave is medium dependent.
  • The denser a medium, the slower the speed of waves will be be.
  • A less dense medium will have waves traveling through faster.
6 0
3 years ago
Read 2 more answers
Give reason why mendeleev's definition of transition elements is no longer acceptable​
hjlf
Mendeleev's periodic table

Dmitri Mendeleev

Like many scientists working at the end of the 19th-century the Russian chemist Dmitri Mendeleev (1834-1907) was looking for ways to organise the known elements. Mendeleev published his first periodic table of the elements in 1869.

Features of Mendeleev's tables

Mendeleev arranged the elements in order of increasing relative atomic mass. When he did this he noted that the chemical properties of the elements and their compounds showed a periodic trend. He then arranged the elements by putting those with similar properties below each other into groups. To make his classification work Mendeleev made a few changes to his order:

he left gaps for yet to be discovered elements
he switched the order of a few elements to keep the groups consistent
5 0
3 years ago
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