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Benzoic acid is produced commercially by partial oxidation of toluene with oxygen. Cobalt or manganese naphthenates are usually used as catalysts. Benzoic acid is found naturally in many plants and is an intermediate in the biosynthesis of many secondary metabolites.
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∙ 9y ago
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∙ 11y agoIts prepared by oxidation of benzyl alcohol by KMnO4 in presence of Na2CO3.
These three reagents are taken in a flask with 100 ml of distilled water..This mixture is boiled for about half and hour...Completion of reaction is indicated by discoloration of parmangnate...(MnO4- is reduced to MnO2 in this case).To get the acid this mixture is acidified with HCl (conc.) and 20%Na2SO3 is added with continuous shaking until all the MnO2 is completely dissolved and only the white ppt. of acid remains in the mixture which can b easily filtered out.
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∙ 13y agotake reflux apparatus using 250 ml flask. place 2ml of benzonitrile, 25ml of 10% NaoH Solution and 2 boiling chips in the flask and reflux for 40-50 min by heating. Place a wet paper at the moutrh of the condenser(to verify removal of NH3 gas). Remove the flask when oily droplet of benzonitrile have dissolved. Decant the content into beaker, chill the mixture ina an ice bath and slowly acidify by adding conc. HCl drop by drop,with constant stirring. Check completion of neutralisation by litmus paper. Filter and wash the precipitate with cold water and recyrstallise the product from boiling point. Determine the yield, percentage and the melting point of crude and recrystallised sample.
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∙ 11y agoConvert benzene to methyl benzene by reacting it with CH3Cl and anhydrous AlCl3.
Oxidize methyl benzene with a powerful oxidizing agent like alkaline KMnO4.
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∙ 13y agoBy Friedel crafts acylation, ie treating benzene with any CH3COX, where X is a halide.
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∙ 11y agoYou can turn chlorobenzene into a grinard reagent and react it with formaldehyde to form benzyl alcohol, then use a strong oxidizer like jones reagent to convert it to the acid.
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∙ 11y agoDiazotise benzene amine (or aniline) followed by treatment with KCN/CuCN to obtain benzonitrile.
Hydrolysis of benzonitrile catalysed by acid will give benzoic acid.
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∙ 10y agoFirst convert into benzene.Heat with Zn dust.Then add CH3-Cl+anhydrous AlCl3.Then add hot concentrated KMnO4.
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∙ 15y agoDecarboxylation
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Which is more acidic benzoic acid or acetic acid?
Benzoic acid is the stronger acid compared to ethanoic acid. However, ethanoic acid is more corrosive and will burn skin etc more than benzoic acid. Corrosivity/burn potential are not the same as acid strength. This is due to the delocalisation of the lone pair of electrons on the oxygen atom into the benzene, increasing the polarity of the -OH bond and thus makes the cleaving of the H+ ion easier. The delocalisation of electrons into the benzene ring also stabilises the carboxylate ion. Therefore the position of equilibrium lies more to the right and this shows that benzoic is a more acidic acid. The simplified version is that a benzene ring is electron withdrawing and a methyl group is electron releasing. The electron withdrawing power makes the releasing of the H+ ion easier.
Why is methanoic acid more acidic than benzoic acid?
We would certainly expect benzoic acid to be more acidic than methanoic acid, due to stabilisation of the benzoate anion caused by the delocalisation of the electrons on the oxygen atom over the benzene ring. However, in practice, it is found that methanoic acid is actually more acidic than benzoic acid(has a greater Ka value). This is because methanoic acid is more soluble in water than benzoic acid, so there is greater ionisation of methanoic acid in water than benzoic acid.
Which is more acidic formic acid or benzoic acid?
Benzoic Acid
Why o-hydroxy benzoic acid is strong than m-hydroxy benzoic acid?
nswers for Orthohydroxybenzoic Acid Is More Acidic Then The Parahydroxy Benzoic Acid
What is the eutectic temperature for benzoic and mandelic acid?
The eutectic temperature for benzoic acid and mendelic acid mixture is 105-106º C. This is usually about 60% mandelic acid and 40% benzoic acid.
How do you determine the partition coefficient of benzoic acid between benzene and water?
To determine the partition coefficient of Benzoic Acid between Benzene and water the solubility of benzoic acid is required. The partition can then be determined by calculation.
What is oxidation of benzene?
benzene after oxidation convert into benzoic acid. zahra khan.
How can you distinguish between benzoic acid and benzene?
Benzoic acid will give brisk effervescence on reacting with sodium bicarbonate.
How do you detect benzene in the Grignard synthesis of benzoic acid?
Not sure what you mean... If you mean 'how is benzene used for the Grignard synthesis of Benzoic Acid,' then the answer is, bromobenzene (C6H5Br) is turned into phenyl Grignard (C6H5MgBr) by the addition of Magnesium in ether, and then dry ice (solid CO2) is added to the reaction mixture to make Benzoate (C6H5COO-), which is the conjugate base of Benzoic Acid. That has got to help you somehow.
Prepare O-nitrotoluene from benzene and show reactions involved?
preparation of m-nitro benzoic acid from benzene
To make a saturated solution of benzoic acid using benzene as the solvent how much is need of each?
I can't find a number, but I found this: Benzoic acid is slightly soluble in water, soluble in ethanol, very slightly soluble in benzene and acetone. (see link on the left under Web Links) This implies not very much benzoic acid will dissolve in benzene. This other site (the MSDS for benzoic acid) says this: SOLVENT SOLUBILITY: Soluble in alcohol, ether, benzene, chloroform, acetone, carbon disulfide, oil of turpentine, carbon tetrachloride, fixed and volatile oils; slightly soluble in petroleum ether, hexane. This does make it sound fairly soluble! Hard to say which is right. This can easily be determined by experiment however!
Which is more acidic benzoic acid or acetic acid?
Benzoic acid is the stronger acid compared to ethanoic acid. However, ethanoic acid is more corrosive and will burn skin etc more than benzoic acid. Corrosivity/burn potential are not the same as acid strength. This is due to the delocalisation of the lone pair of electrons on the oxygen atom into the benzene, increasing the polarity of the -OH bond and thus makes the cleaving of the H+ ion easier. The delocalisation of electrons into the benzene ring also stabilises the carboxylate ion. Therefore the position of equilibrium lies more to the right and this shows that benzoic is a more acidic acid. The simplified version is that a benzene ring is electron withdrawing and a methyl group is electron releasing. The electron withdrawing power makes the releasing of the H+ ion easier.
Is benzoic acid inorganic or organic?
Any molecule containing carbon that is NOT either carbon monoxide, carbon dioxide, or any allotrope of elemental carbon is considered to be organic. Seeing as benzoic acid is a carboxylic acid created by a benzene ring, it most definetely is organic
Benzoic acid is unsaturated or saturated compound?
Benzoic acid is unsaturated because it has double- double carbon bonds and due to resonance those bonds can be easily move around , that's what makes benzoic acid unique. All compounds containing a benzene ring are actually unsaturated.
Why is methanoic acid more acidic than benzoic acid?
We would certainly expect benzoic acid to be more acidic than methanoic acid, due to stabilisation of the benzoate anion caused by the delocalisation of the electrons on the oxygen atom over the benzene ring. However, in practice, it is found that methanoic acid is actually more acidic than benzoic acid(has a greater Ka value). This is because methanoic acid is more soluble in water than benzoic acid, so there is greater ionisation of methanoic acid in water than benzoic acid.
Is Benzoic acid intensive or extensive?
Neither. Benzoic acid is... benzoic acid. Intensive and extensive are properties are characteristics of elements and compounds such as color, density, odor, conductivity, etc. To say benzoic acid is extensive or benzoic acid is intensive doesn't make sense.
Extensive or intensive?
Neither. Benzoic acid is... benzoic acid. Intensive and extensive are properties are characteristics of elements and compounds such as color, density, odor, conductivity, etc. To say benzoic acid is extensive or benzoic acid is intensive doesn't make sense.
