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3 years ago

What reaction conditions most effectively convert a carboxylic acid to a methyl ester

Chemistry

2 answers:

ycow [4]3 years ago

4 0

Answer:

Fischer Esterification

Explanation:

Fischer esterification or Fischer-Speier esterification is a carboxylic esterification reaction that uses an inorganic acid as a catalyst, mainly sulfuric acid (H2SO4).

The carboxylic acids are usually too weak acids, so they have little tendency to yield the proton (H +) that they lose in the esterification.

A stronger acid, such as sulfuric acid, behaves like a proton donor and facilitates the esterification reaction.

First, sulfuric acid injects a proton into the carboxyl group

The alcohol molecule, R’-OH, has an electron-rich oxygen atom, is attracted to the protonated carboxylic structure

This complex is not very stable and stabilizes towards the most favorable energy molecule, which is the ester, releasing a water molecule and a proton (H +). The proton is then used to regenerate sulfuric acid

dem82 [27]3 years ago

4 0

Answer: The convenient and efficient sonochemical method for methyl esterification of carboxylic acids reaction conditions are ;

• catalyzation by polymer-supported triphenylphosphine (0.1 eq. PS-PPh3)

• in the presence of 2,4,6-trichloro-1,3,5-triazine (1.0 eq. TCT) and Na2CO3 (2.0 eq. )

• Temperature 50°C for 10 - 30 mins

Explanation:

Methyl esters of various carboxylic acids bearing reactive hydroxyl groups as well as acid- or base-labile functionalities could be rapidly prepared within short times in good to excellent yields in high purities without column chromatography.

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Rashid [163]

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3 years ago

Liquid does not act that a solid. how is it different from a solid and gas?

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2 years ago

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3 years ago

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A student weighs out 0. 0422 g of magnesium metal. The magnesium metal is reacted with excess hydrochloric acid to produce hydro

lutik1710 [3]

The student weighs out 0.0422 grams of the metal magnesium, thus we can figure that the more's, the magnesium he used, is the mass of the magnesium over the more mass, which is 0.024422.
That is approximately 0.001758.
Furthermore, it claims that too much hydrochloric acid causes the metal magnesium to react, producing hydrogen gas.
The volume of collected gas is 43.9 cc, the mastic pressure is 22 cc, and a sample of hydrogen gas is collected over water in a meter.

<h3>Is it true that calculations made utilizing experimental and gathered data result in a percent error? </h3>

Consequently, we are aware that magnesium and chloride react.
We create 1 as the reaction ratio is 1:2.
The hydrogen and 1 are more.
Magnesium chloride is more.
Therefore, based on this equation, we can infer that the amount of hydrogen that would be created in this scenario is greater than the amount of magnesium present here, or 0.001758 more.
Among hydrogen, there is.
\Once we convert the temperature from 32 Celsius to kelvin, we can tell you that the temperature is actually about 5.15 kelvin.
The gas has a volume of 43 in m, which is equal to 0.0439 liter and indicates that the pressure is approximately 832 millimeter.
Mercury, which is 2 times 13332 plus ca, or roughly 110922.24 par, is a mathematical constant.
So, in this instance, we are aware that p v = n r t.
The r in this case equals p v over n t, thus we want to determine the r.
So p is 110922.24. The temperature is 305.15 and the V is 0.04 over the n is 0.001758.
Let's proceed with the calculations right now.
In this instance, you will discover that the solution is 9.077 times 10; that is all there is to it.

To learn more about Magnesium chloride reactions visit:

brainly.com/question/27891157

#SPJ4

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2 years ago

Cual es la valencia del F CL Br I

bagirrra123 [75]

Answer: ok

Explanation: i known what your saying

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3 years ago