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2. McIlvaine buffer - Wikipedia

   en.wikipedia.org/wiki/McIlvaine_buffer

   McIlvaine buffer is a buffer solution composed of citric acid and disodium hydrogen phosphate, also known as citrate-phosphate buffer.It was introduced in 1921 by the United States agronomist Theodore Clinton McIlvaine (1875–1959) from West Virginia University, and it can be prepared in pH 2.2 to 8 by mixing two stock solutions.

3. Monosodium citrate - Wikipedia

   en.wikipedia.org/wiki/Monosodium_citrate

   Monosodium citrate, more correctly, sodium dihydrogen citrate (Latin: natrium citricum acidulatum), is an acid salt of citric acid. Disodium citrate and trisodium citrate are also known. It can be prepared by partial neutralisation of citric acid [3] with an aqueous solution of sodium bicarbonate or carbonate. It has a slightly acidic taste. [3]

4. Buffer solution - Wikipedia

   en.wikipedia.org/wiki/Buffer_solution

   In the case of citric acid, the overlap is extensive and solutions of citric acid are buffered over the whole range of pH 2.5 to 7.5. Calculation of the pH with a polyprotic acid requires a speciation calculation to be performed. In the case of citric acid, this entails the solution of the two equations of mass balance:

5. Earwax - Wikipedia

   en.wikipedia.org/wiki/Earwax

   Earwax helps protect the ear by trapping dust and other foreign particles that could filter through and damage the eardrum. [5] Normally, earwax moves toward the opening of the ear and falls out or is washed away, but sometimes excessive earwax can gather and become hard to remove. This is referred to as excessive earwax or impacted cerumen. [21]

6. Citric acid - Wikipedia

   en.wikipedia.org/wiki/Citric_acid

   Citric acid is a triprotic acid, with pK a values, extrapolated to zero ionic strength, of 3.128, 4.761, and 6.396 at 25 °C. [21] The pK a of the hydroxyl group has been found, by means of 13 C NMR spectroscopy, to be 14.4. [22] The speciation diagram shows that solutions of citric acid are buffer solutions between about pH 2 and pH 8. In ...

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8. Trisodium citrate - Wikipedia

   en.wikipedia.org/wiki/Trisodium_citrate

   Speciation diagram for a 10-millimolar solution of citric acid. The violet curve corresponds to the trisodium citrate. As a conjugate base of a weak acid, citrate can perform as a buffering agent or acidity regulator, resisting changes in pH. It is used to control acidity in some substances, such as gelatin desserts. It can be found in the milk ...

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