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Benzoic acid is a weak acid, which means that its dissociation is reversible.
C6H5COOH -----> C6H5COO- + H+
At pH 2, there are a lot of H+ ions in the solution. According to Le Chatelier's Principle, the equilibrium will shift to the left to favor the opposite reaction where Benzoic acid is produced, to reduce the amount of H+ in the solution. Therefore, an insignificant amount of benzoic acid will dissociate, while most of it remains in the molecular form.
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∙ 13y ago
At a pH of 2, benzoic acid exists predominantly in its molecular form because the acidic conditions suppress the ionization of the carboxyl group (-COOH), keeping most of the molecules unionized. This prevents the formation of benzoate ions, which would occur if the carboxyl group were to ionize.
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What is the pH value of benzoic acid?
The pH value of benzoic acid is typically around 2.8-4.0 in water at room temperature.
What should be the approximate pH and composition of aqueous system to dissolve benzoic acid?
To dissolve benzoic acid, the aqueous system should be slightly acidic with a pH around 2-3. This can be achieved by adding a small amount of hydrochloric acid to water. Benzoic acid is sparingly soluble in pure water but dissolves more readily in an acidic solution due to the formation of benzoate ions.
How can you separate the mixture of chloroform aniline and benzoic acid?
One way to separate this mixture is through a process called liquid-liquid extraction. Aniline and benzoic acid are both water-soluble, while chloroform is not. By adding water to the mixture, the aniline and benzoic acid will dissolve in the water phase, leaving the chloroform to be separated out. The aniline and benzoic acid can then be recovered from the water phase by adjusting the pH of the solution.
What is the pH of sodium benzoate?
Sodium benzoate is a salt derived from benzoic acid, which is weakly acidic. The pH of a solution containing sodium benzoate would depend on the concentration of the solution, but typically it would be acidic with a pH below 7.
What is the pH of a solution that results from mixing 15.265 g of benzoic acid C6H5COOH MM equals 122.1 and 12.97g of sodium benzoate NaC6H5COO MM equals 144.1 in water to produce 500 ml of solution?
To calculate the pH of the solution, you need to consider the dissociation of benzoic acid and sodium benzoate. Since benzoic acid is a weak acid, it will partially dissociate, while sodium benzoate will fully dissociate into its ions. Together, they will create a buffer solution. You will need to calculate the concentrations of the acid and conjugate base, use the Henderson-Hasselbalch equation, and consider the ionization constant of benzoic acid to determine the pH.
What is the pH value of benzoic acid?
The pH value of benzoic acid is typically around 2.8-4.0 in water at room temperature.
Why is benzoic acid is extracted into ether then extracted into an alkali solution prior to being precipitated with strong acid in its preparation with grignard reagent?
Benzoic acid is first extracted into ether to remove impurities or byproducts. It is then extracted into an alkali solution to convert benzoic acid into its water-soluble salt form, making it easier to separate from the non-basic impurities that remain in the ether layer. Finally, the benzoic acid is precipitated with a strong acid to regenerate the pure benzoic acid molecule.
A 50.0 ml sample of 0.43 m benzoic acid c6h5cooh is titrated with 0.50 m naoh calculate the pH at the equivalence point ka of c6h5cooh equals 6.5 10-5?
At the equivalence point, the moles of NaOH added will equal the moles of benzoic acid initially present in the sample. Since benzoic acid is a weak acid, it will partially dissociate in solution to produce benzoate ions and protons. At the equivalence point, all the benzoic acid has been converted to benzoate ions, resulting in a buffer solution of benzoate and its conjugate base. To calculate the pH at the equivalence point, you can use the Henderson-Hasselbalch equation, which considers the concentration of benzoate ions and benzoic acid to determine the pH of the solution.
What mass of sodium benzoate should be added to 160.0 mL of a 0.15 mL benzoic acid solution in order get a buffer with a pH of 4.30?
To create a buffer with a pH of 4.30, you need to use the Henderson-Hasselbalch equation and the pKa of benzoic acid to calculate the ratio of benzoate ion to benzoic acid. From there, you can determine the moles of sodium benzoate needed and then convert it to grams. Make sure to consider the volume change when adding the sodium benzoate to the solution.
What is the pH of a solution that results from mixing 15.265 g of benzoic acid C6H5COOH MM equals 122.1 and 12.97g of sodium benzoate NaC6H5COO MM equals 144.1 in water to produce 500 ml of solution?
To calculate the pH of the solution, you need to consider the dissociation of benzoic acid and sodium benzoate. Since benzoic acid is a weak acid, it will partially dissociate, while sodium benzoate will fully dissociate into its ions. Together, they will create a buffer solution. You will need to calculate the concentrations of the acid and conjugate base, use the Henderson-Hasselbalch equation, and consider the ionization constant of benzoic acid to determine the pH.
Why does carbonic acid cause the pH of the ocean to decrease?
Carbonic acid ionizes to form protons which lower pH .
Which household substance has a pH of 0?
Hydrochloric acid typically has a pH of 0 when in its concentrated form.
What are other ph decreasers?
Adding an acid to a solution can cause the ph to decrease. Looking at things in the molecular level a good acid or something that will be able to decrease the ph will be anything that can easily donate an H+ ion to a solution. Strong acids are examples
How will you prove that nitric acid is an acid?
you can easily prove this by testing nitric acid with pH paper...if the color matches to any of the pH levels form 0-7, it is an acid
In chimistry laboratory how can you separate benzoic acid from para- nitro-anilin with extraction prgress?
You can separate benzoic acid from para-nitroaniline using liquid-liquid extraction by exploiting their different solubilities in different solvents. Benzoic acid is soluble in aqueous solutions, while para-nitroaniline is insoluble in water but soluble in organic solvents. By carefully selecting the appropriate solvents and adjusting pH levels, you can successfully separate the two compounds through multiple extraction steps.
How do you measure the pH of 98 percent concentrated acid?
To measure the pH of a 98% concentrated acid, you first need to dilute the acid to a lower concentration, typically around 1-3%. Then you can measure the pH using a pH meter or pH indicator strips. It's important to handle concentrated acids with caution and follow proper safety procedures.
How does acid precipition form?
acid precipitation can form by air pollution, burning of fossil fuels, and Natural Resources.acid precipitation is formed from the ph level in waters. if the ph level is high and gets evaporated it will rain down as "acid rain"
