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From this salt the benzoate ion C6H5-COO- is a base ( the other part Na+ is neutral).
This base has a pKB value of 9.80 (benzoate)
The pKacid value of its conjugated benzoic acid ( C6H5-COOH) however is
pKbenzoic-acid = 4.20 = pKa
(which is (not surprisingly) equal to 14.0-pKbase = 14.0-9.80)
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∙ 14y ago
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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 polarity of sodium benzoate?
Sodium benzoate is a polar compound due to its ionic nature, with the sodium cation and the benzoate anion. Sodium benzoate dissolves well in water and other polar solvents due to its polarity.
What is the pKa value for sodium octanesulfonate?
The pKa value for sodium octanesulfonate is typically around 2.0 to 2.5.
What elements male up sodium benzoate?
Sodium benzoate is composed of sodium cations (Na+) and benzoate anions (C6H5COO-), which is the conjugate base of benzoic acid. It is a white crystalline solid that is soluble in water and commonly used as a preservative in food and beverages.
What is the Pka of sodium hydroxide?
Sodium hydroxide is a strong base and does not have a pKa value. Instead, it dissociates completely in water to form hydroxide ions (OH-) and sodium ions (Na+).
Is sodium benzoate soluble in sodium chloride?
Yes, Benzoic acid is a weak acid (pKa ~ 4.2) that will dissolve in weak base such as sodium bicarbonate (pKa ~ 6.4)
What are constituent elements of sodium benzoate?
Sodium benzoate is composed of sodium ions (Na+) and benzoate ions (C7H5O2-). When sodium benzoate is dissolved in water, it dissociates into these ions. Sodium benzoate is primarily used as a preservative in food and beverages.
What is the common name for sodium benzoate?
The common name for sodium benzoate is simply sodium benzoate.
Does sodium benzoate contain iodine?
No, sodium benzoate does not contain iodine. Sodium benzoate is a sodium salt of benzoic acid and is often used as a preservative in food and beverages. Iodine is a different element that is not found in sodium benzoate.
Is sodium benzoate gluten free?
sodium benzoate glutin free
What is the sodium amount in 100mg of sodium benzoate?
15,95 mg of sodium in 100 mg sodium benzoate
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 chemical symbol for sodium benzoate?
Sodium benzoate has the formula C6H5COO-Na+
What are the constituent element of sodium benzoate?
The constituent elements of sodium benzoate are sodium, carbon, hydrogen, and oxygen.
What is the polarity of sodium benzoate?
Sodium benzoate is a polar compound due to its ionic nature, with the sodium cation and the benzoate anion. Sodium benzoate dissolves well in water and other polar solvents due to its polarity.
How prepare sodium benzoate?
To prepare sodium benzoate, you can neutralize benzoic acid with sodium hydroxide. This reaction forms sodium benzoate and water. The resulting sodium benzoate can then be purified through crystallization for use as a preservative in food and beverages.
Is sodium benzoate a pure substance?
Sodium benzoate is a chemical compound consisting of sodium cations and benzoate anions. It is not considered a pure substance in the strictest sense, as it is a combination of different elements.
