0.4M is the concentration (in grams per milliliter) of a solution of na2hpo4 when 2.00l of it can be used to prepare 350gml of 5.00l solution.
The inorganic molecule with the formula Na2HPO4 is known as disodium phosphate (DSP), disodium hydrogen phosphate, or sodium phosphate dibasic. It belongs to a group of sodium phosphates. The salt is familiar both in its anhydrous form and in its 2, 7, 8, and 12-hydrate forms. All are white, water-soluble powders, with the exception of the hygroscopic anhydrous salt.
In foods and water softening treatments, it is used with trisodium phosphate. It is used to modify the pH of meals. When making condensed milk, its presence stops coagulation. In powdered products, it serves as an anti-caking ingredient. It is used in puddings and desserts to thicken Jell-O Instant Pudding and cut the cooking time for Cream of Wheat.
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