Organic Chemistry
Acids and Bases

Why is benzoic acid soluble in Na2CO3?

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Answered 2013-01-25 09:38:11

Benzoic acid reacts with sodium carbonate to form sodium benzoate salt which is soluble in water.

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Benzoic acid is soluble in kerosene.

No, benzoic acid is not soluble in hydrochloric acid. However if you boil the benzoic acid to where it is water soluable and add hydrochloric acid it forms it back into the solid

Yes it is soluble in ether.

Benzoic acid is soluble in water, as are all acids, by definition. An acid is a chemical which, when dissolved in water, increases the concentration of H+ ions.

It would depend on the solvent that phenol or benzoic acid are being placed in. Benzoic acid would be more soluble in a polar solvent because of the carbonyl group's extreme electronegativity.

To be soluble a solution must be capable of being dissolved in a solvent, usually water. The HCL cannot ionize into H+ with the COOH ring in the Benzoic acid. Benzoic is hydrophobic in this solution.

Add water which will dissolve the salt. Filter out the benzoic acid crystals which are barely soluble. Dry the benzoic acid crystal. Evaporate the water of the salt solution by boiling. Dry.

Benzoic acid is more soluble than camphor in ethanol. The solution can be filtrated.

It can be separated by Crystallization and decolorization. It is because the benzoic acid is soluble in hot water. If the hot solution is cooled, the benzoic acid will recrystallize.

Both have nonpolar molecules.

Benzoic acid is only partially soluble in methanol. It has a predicted solubility rate of 2.246 M in methanol, which is low and means that it will only partially dissolve.

Benzoic acid is only slightly soluble in water. When warmed up it will dissolve. It can then be filtered and cooled down and the benzoic acid will crystallize out. This is a method use to purify the substance.

yes , it is very soluble in about 1.0 mL of ethanol.

Yes, Benzoic acid is a weak acid (pKa ~ 4.2) that will dissolve in weak base such as sodium bicarbonate (pKa ~ 6.4)

it is soluble in chloroform. Chloroform is nonpolar.

because it is an acid which forms a salt with alkali and such salts are soluble in water.

well Naphtali has a much lower boiling point so u can distill it off, or u can add water wich the benzoic acid is slightly soluble in, than boil it off.

Both benzoic acid and biphenyl are organic solutes, and therefore will dissolve in organic solvents. (ie: diethyl ether) Benzoic acid (an acid) will react with a strong base (ie: NaOH) to form sodium benzoate (which is a water soluble salt) and aqueous NaCl. Therefore, if you have a mixture of biphenyl and benzoic acid, you can dissolve it in an organic solvent (say diethyl ether) and add NaOH, to convert benzoic acid into a water soluble salt. (water is NOT soluble in organic solvents). therefore your mixture in solution will separate into two layers. The upper organic layer will contain biphenyl dissolved in ether, and the lower aqueous layer will contain the water soluble salt of benzoic acid and water. (as well as aqueous NaCl). Using a separatory funnel, or other separation equpiment, the two layers can be separated. The benzoic acid can be extracted by adding HCl which will convert the salt back into benzoic acid, and the solution can be chilled (to cause precipitation of benzoic acid) and then filtered by suction filtration, etc.. The biphenyl can be extracted by distillation, as ether is quite volatile and will evaporate easily ( = 34.6 degrees Celsius)

Yes. Benzoic acid reacts with NaOH (depending on the molarity), and becomes an extremely polar ion, which will dissolve in the water that is in the NaOH solution.

NaOH form the salt sodium benzoate with benzoic acid and due to ionic nature salt is more soluble in water.

The differences in solubility of carboxylic acids acetic acid and benzoic acid should be very minimal, since both contain a carboxyl group. However, the differences that are there are because of size. The benzene ring on the benzoic acid is a bulky structure, making it more nonpolar and less soluble, and also more heavy and less soluble.

It is not so soluble in water - only 2,9 g/L at r.m.

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