Sodium phosphate, usually listed as an ingredient on food labels, can be referring to either monosodium phosphate, disodium phosphate, or trisodium phosphate. It is usually an emulsifier (thickener) or a preserving agent. Disodium is the one most commonly used.
Sodium phosphate is available in different forms with varying amounts of phosphate. A common form, monobasic sodium phosphate, contains about 1.3 milliequivalents (meq) of phosphate per milligram of sodium phosphate. In a different form, dibasic sodium phosphate, there are about 2.16 meq of phosphate per milligram of sodium phosphate.
Phosphate buffer is a solution containing a mixture of dibasic and monobasic sodium phosphate used to maintain a stable pH. Phosphate buffered saline (PBS) is a buffer solution containing phosphate salts, sodium chloride, and sometimes potassium chloride used in biological and chemical research to provide a stable environment for cells. PBS is a specific type of phosphate buffer solution that is isotonic and mimics the pH and osmolarity of biological fluids.
Sodium phosphate is a generic term for the salts of sodium hydroxide and phosphoric acid (soluble in water). They are:sodium dihydrogen phosphate, commonly termed monosodium phosphate, (NaH2PO4), is also known as "sodium phosphate, monobasic".disodium hydrogen phosphate, commonly termed disodium phosphate, (Na2HPO4) is also known as "sodium phosphate, dibasic".Trisodium phosphate, commonly shortened to just sodium phosphate, (Na3PO4), is also known as "sodium phosphate, tribasic".sodium aluminium phosphate, (Na8Al2(OH)2(PO4)4).
The chemical formula of magnesium phosphate is Mg3(PO4)2. To find the total number of atoms, we add the number of atoms of each element: 3 magnesium atoms, 2 phosphorus atoms, and 8 oxygen atoms. So, magnesium phosphate contains a total of 13 atoms.
copper(II) phosphate can be made by mixing an aqueous copper(II) solution (i.e. CuCl2 or CuBr2) with an aqueous phosphate solution (i.e. monobasic or dibasic phosphate). A fluffy, light blue precipitate forms immediately upon addition of the copper(II) solution to the phosphate solution.
Monobasic acids can donate only one proton (H+) per molecule in a reaction, while dibasic acids can donate two protons per molecule. This means that dibasic acids have double the acidic strength compared to monobasic acids.
The pH of a phosphate buffer solution depends on the ratio of monobasic to dibasic phosphate ions present. For example, a mixture of NaH2PO4 and Na2HPO4 can create a buffer with a pH around 7.2-7.6, depending on the concentrations of each salt used.
KH2PO4 is monobasic because it contains one replaceable hydrogen ion for each molecule of the compound. K2HPO4 is dibasic because it contains two replaceable hydrogen ions for each molecule of the compound. The number of replaceable hydrogen ions determines whether a compound is classified as monobasic, dibasic, tribasic, etc.
Yes, dibasic acids have two hydrogen ions to donate in an acid-base reaction, making them more acidic than monobasic acids that only have one hydrogen ion to donate.
Sodium phosphate is available in different forms with varying amounts of phosphate. A common form, monobasic sodium phosphate, contains about 1.3 milliequivalents (meq) of phosphate per milligram of sodium phosphate. In a different form, dibasic sodium phosphate, there are about 2.16 meq of phosphate per milligram of sodium phosphate.
Phosphate buffer is a solution containing a mixture of dibasic and monobasic sodium phosphate used to maintain a stable pH. Phosphate buffered saline (PBS) is a buffer solution containing phosphate salts, sodium chloride, and sometimes potassium chloride used in biological and chemical research to provide a stable environment for cells. PBS is a specific type of phosphate buffer solution that is isotonic and mimics the pH and osmolarity of biological fluids.
Yes, sulfuric acid is a monobasic acid because it can donate only one proton (H+) per molecule in an acid-base reaction.
To prepare a 0.02 M phosphate buffer, you would need to mix suitable amounts of a monobasic potassium phosphate and a dibasic potassium phosphate solution with water to achieve the desired concentration. Calculate the required volumes of each solution based on their respective concentrations and molar masses. Finally, adjust the pH as needed with the addition of acid or base.
To prepare 20mM sodium phosphate solution, dissolve the appropriate amount of sodium phosphate dibasic and monobasic in distilled water to get the desired concentration. For example, to make 1 liter of 20mM solution, you can mix 13.6g of Na2HPO4 and 3.4g of NaH2PO4•H2O. Adjust the pH if necessary.
Sodium phosphate is a generic term for the salts of sodium hydroxide and phosphoric acid (soluble in water). They are:sodium dihydrogen phosphate, commonly termed monosodium phosphate, (NaH2PO4), is also known as "sodium phosphate, monobasic".disodium hydrogen phosphate, commonly termed disodium phosphate, (Na2HPO4) is also known as "sodium phosphate, dibasic".Trisodium phosphate, commonly shortened to just sodium phosphate, (Na3PO4), is also known as "sodium phosphate, tribasic".sodium aluminium phosphate, (Na8Al2(OH)2(PO4)4).
A 0.2 M sodium phosphate buffer at pH 7.0 contains a mixture of sodium dihydrogen phosphate (monobasic) and disodium hydrogen phosphate (dibasic) dissolved in water. This buffer system can help in maintaining a stable pH around 7.0 when small amounts of acids or bases are added to the solution.
To prepare 0.1M PBS of pH 7, mix appropriate amounts of monobasic potassium phosphate, dibasic potassium phosphate, and sodium chloride in distilled water. Adjust the pH with HCl or NaOH as needed. To reach a pH of 7 for a 0.1M PBS, adjust the pH to 7.4 with NaOH or HCl.