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What else can I help you with?
Who gives oxygen atom in ester synthesis?
It depends on which reaction is used to create the ester. When catalyzing a carboxylic acid with a strong base such as NaOH, then using an alkyl halide, the oxygen is from the acid. R-COOacidH + NaOH -> R-COO-acid + R'X ->R-COOacidR' When using a carboxylic acid with an alcohol or an acid chloride with an alcohol, the oxygen originates from the alcohol. R-COOacidH + R'OalcoholH + HCl -> R-COOalcoholR' R-COOacidCl + R'OalcoholH + Pyridine -> R-COOalcoholR'
How would you prepare ester?
Esters can be prepared through esterification, a reaction between an alcohol and a carboxylic acid, typically using a catalyst like sulfuric acid. This reaction results in the formation of an ester and water. The reaction can be refluxed to drive it to completion, and the ester can be isolated and purified by techniques like distillation or extraction.
How do you convert 91 percent isopropyl alcohol to 99 percent?
by using fractional distillation
How can you favor the formation of an ester when reacting a alcohol and carboxylic acid?
A dehydration reaction of a carboxylic acid and an alcohol using an acid catalyst:R1COOH + R2OH --> R1CO-OR2 + H-OH (water is driven away to drive the reaction)This is done by using the alcohol's oxygen as a nucleophile and forming a tetrahedral intermediate. Most importantly--the -OH group of the carboxylic acid must become a better leaving group by protonating it to become -OH2+ group.Esters can also form using base as a catalyst.R1COO-+ R2OH --> R1CO-OR2 +-OH
Polarity of cholesterol?
Polarity occurs when there are un-bonded electrons within the molecule. Without the alcohol functional group, the cholesterol molecule would be non-polar. However, since there is an alcohol functional group, the oxygen's extra electrons cause this molecule to be polar. This alcohol functional group allows the possiblility of linking with other molecules using an ester or hydroxyl bond.
Who gives oxygen atom in ester synthesis?
It depends on which reaction is used to create the ester. When catalyzing a carboxylic acid with a strong base such as NaOH, then using an alkyl halide, the oxygen is from the acid. R-COOacidH + NaOH -> R-COO-acid + R'X ->R-COOacidR' When using a carboxylic acid with an alcohol or an acid chloride with an alcohol, the oxygen originates from the alcohol. R-COOacidH + R'OalcoholH + HCl -> R-COOalcoholR' R-COOacidCl + R'OalcoholH + Pyridine -> R-COOalcoholR'
Test for ester?
Acid hydrolysis using sulphuric acid and water (equilibrium reaction). The ester splits into a carboxylic acid and alcohol, protons donated from the acid. The solution can then be distilled and the remaining acid can be checked using UV indicator. Acid hydrolysis using sulphuric acid and water (equilibrium reaction). The ester splits into a carboxylic acid and alcohol, protons donated from the acid. The solution can then be distilled and the remaining acid can be checked using UV indicator.
How do you convert phenol to benzokenone?
To convert phenol to benzophenone, you can first react phenol with benzoyl chloride in the presence of a base, such as pyridine, to form an ester. Then, oxidize the ester using a strong oxidizing agent, like chromic acid or potassium permanganate, to obtain benzophenone.
How would you prepare ester?
Esters can be prepared through esterification, a reaction between an alcohol and a carboxylic acid, typically using a catalyst like sulfuric acid. This reaction results in the formation of an ester and water. The reaction can be refluxed to drive it to completion, and the ester can be isolated and purified by techniques like distillation or extraction.
How do you convert 91 percent isopropyl alcohol to 99 percent?
by using fractional distillation
How can you favor the formation of an ester when reacting a alcohol and carboxylic acid?
A dehydration reaction of a carboxylic acid and an alcohol using an acid catalyst:R1COOH + R2OH --> R1CO-OR2 + H-OH (water is driven away to drive the reaction)This is done by using the alcohol's oxygen as a nucleophile and forming a tetrahedral intermediate. Most importantly--the -OH group of the carboxylic acid must become a better leaving group by protonating it to become -OH2+ group.Esters can also form using base as a catalyst.R1COO-+ R2OH --> R1CO-OR2 +-OH
What is the difference between trans-esterification and esterification processes in methyl esters?
esterification -----> ROH + R'-COOH -------> R'COOR acid with alcohol gives ester transesterification ROH + R'COOR'' -------- > R'COOR change of alkyl group present with R'COO by using a alcohol if you want to http://en.wikipedia.org/wiki/Transesterification Esterification is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. H3C-COOH + HO-CH2-CH3 → H3C-COO-CH2-CH3 + H2O Transesterification is the process of exchanging the alkoxy group of an ester compound with another alcohol. These reactions are often catalyzed by the addition of an acid or base.
How can I convert an image to sRGB without using Photoshop?
You can convert an image to sRGB without using Photoshop by using online tools like Adobe Color Converter or websites like Convertio. These tools allow you to upload your image and convert it to the sRGB color profile easily.
What is the best way to celebrate without alcohol?
There are many ways to celebrate without the use of alcohol. Popular alternatives include creating virgin drinks (cocktails without alcohol), or using non-alcohol substitutes such as non-alcoholic beer or non-alcoholic coolers.
How do you Measure alcohol content using hydometer?
i have got a hydometer but not sure of how to convert the readin on the side can u help?
Identify two compounds which react together to form a ester?
Nominally an alcohol and an acid, though in actual practice they're often made with acid chlorides instead of acids per se (the advantage of using an acyl chloride is that that reaction is not reversible, thus it runs to completion instead of coming to equlibrium).
How do you make wine without yeast?
You cannot make wine without yeast of some form. Yeast is necessary to convert the sugars in fruit juice into alcohol. Without yeast, alcohol production is not possible. Even the colloquial form of winemaking that takes place in institutions of incarceration utilizes naturally occurring yeast, or may be rudimentarily "jump-started" using bread yeast.
