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timurjin [86]
2 years ago
13

Ethyl (r)-4-phenylhexanoate was treated with ethyl lithium followed by acid hydrolysis (to neutralize). How many stereoisomers o

f the resulting alcohol were formed?
Chemistry
1 answer:
Oksanka [162]2 years ago
4 0

3 stereoisomers of the resulting alcohol were formed when Ethyl (r)-4-phenylhexanoate was treated with ethyl lithium followed by acid hydrolysis (to neutralize).

<h3>Stereoisomers:</h3>

In contrast to atomic connection, stereoisomers differ in the spatial arrangement of their atoms. The mirror-image stereoisomers, a non-superimposable pair of two molecules that are mirror images of one another, are one of their most intriguing types of isomers.

These include non-enantiomeric optical isomers, cis-trans isomers, E-Z isomers, and meso compounds. Rarely do diastereomers share the same physical characteristics. Stereoisomers are isomers that share the same structure (i.e., the same pieces), but differ in how those parts are arranged in space.

Stereoisomers are isomers that share the same structure (i.e., the same pieces), but differ in how those parts are arranged in space.

Learn more about stereoisomers here:

brainly.com/question/18120547

#SPJ4

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After mixing the solutions in a separatory funnel, the stopper should be ________and the liquid should be ________and the layers
sdas [7]

Answer:

The answer is below

Explanation:

The separation technique is used for separating immiscible liquids.

When separating, the stopper has to be removed when draining the lower layer so as to prevent a vacuum. If vacuum is allowed, the draining rate will reduce and stop.

The liquid should be mixed by shaking the funnel and then opening the stopcock so as the vent out gases.

When near interface between the layers, you should set your eye level so that you do not drain up to the second layer.

After completely draining the first layer, the second layer should be collected in a new flask.

After mixing the solutions in a separatory funnel, the stopper should be removed and the liquid should be mixed thoroughly and the layers allowed to separate. When you get close to the interface between the layers, get eye level with the funnel and slow the draining until the first layer is collected. Switch to a new flask to collect the second layer.

4 0
3 years ago
Will give lots of points if answered correctly. Determine the kb for chloroform when 0.793 moles of solute in 0.758 kg changes t
Liono4ka [1.6K]

Answer: The value of K_{b} for chloroform is 3.62^{o}C/m when 0.793 moles of solute in 0.758 kg changes the boiling point by 3.80 °C.

Explanation:

Given: Moles of solute = 0.793 mol

Mass of solvent = 0.758

\Delta T_{b} = 3.80^{o}C

As molality is the number of moles of solute present in kg of solvent. Hence, molality of given solution is calculated as follows.

Molality = \frac{no. of moles}{mass of solvent (in kg)}\\= \frac{0.793 mol}{0.758 kg}\\= 1.05 m

Now, the values of K_b is calculated as follows.

\Delta T_{b} = i\times K_{b} \times m

where,

i = Van't Hoff factor = 1 (for chloroform)

m = molality

K_{b} = molal boiling point elevation constant

Substitute the values into above formula as follows.

\Delta T_{b} = i\times K_{b} \times m\\3.80^{o}C = 1 \times K_{b} \times 1.05 m\\K_{b} = 3.62^{o}C/m

Thus, we can conclude that the value of K_{b} for chloroform is 3.62^{o}C/m when 0.793 moles of solute in 0.758 kg changes the boiling point by 3.80 °C.

7 0
3 years ago
Give the reason why the empty crucible should be heated before starting the experiment
sdas [7]
To make sure no cracks are in the crucible and also to remove any moisture present in the crucible by the process of heating.
3 0
3 years ago
Explain why every cell in the human body requires support by the circulatory system regardless of its function. Use scientific e
noname [10]
Okay , i’m kinda confused about this
4 0
3 years ago
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A 34.0 g piece of metal is heated to 92.0°C then placed in a beaker of water containing 22.0 g of water at 19.0°C. The temperatu
lapo4ka [179]

Answer:

0.1988 J/g°C

Explanation:

-Qmetal = Qwater

Q = mc∆T

Where;

Q = amount of heat

m = mass of substance

c = specific heat of substance

∆T = change in temperature

Hence;

-{mc∆T} of metal = {mc∆T} of water

From the information provided in this question, For water; m= 22.0g, ∆T = (24°C-19°C), c = 4.18J/g°C.

For metal; m= 34.0g, ∆T = (24°C-92°C), c = ?

Note that, the final temperature of water and the metal = 24°C

-{34 × c × (24°C-92°C)} = 22 × 4.18 × (24°C-19°C)

-{34 × c × (-68°C)} = 459.8

-{34 × c × -68} = 459.8

-{-2312c} = 459.8

+2312c = 459.8

c = 459.8/2312

c = 0.1988

The specific heat capacity of the metal is 0.1988 J/g°C

6 0
2 years ago
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