Question

NaH2PO4. NAHPO4 гидролиз

Answer 1

NaH2PO4+H2O=NaOH+H3PO4
Na2HPO4+2H2O=2NaOH+H3PO4

Answer 2

NaH2PO4 and NaHPO4 are both salts of phosphoric acid. When dissolved in water, they can undergo hydrolysis, which is a chemical reaction in which water molecules split apart the salt molecules into their respective ions. The hydrolysis of these salts can be summarized as follows:

NaH2PO4 + H2O ↔ H3PO4 + Na+ + H2PO4-

NaHPO4 + H2O ↔ H3PO4 + Na+ + HPO42-

In both cases, the hydrolysis results in the formation of phosphoric acid (H3PO4) and the corresponding phosphate ions (H2PO4- and HPO42-). The extent of hydrolysis depends on several factors such as the concentration of the salt solution, temperature, and pH.

At low pH values, the concentration of hydrogen ions (H+) is high, and they can react with the phosphate ions to form more acidic species such as H2PO4- and H3PO4. As the pH increases, the concentration of hydroxide ions (OH-) increases, and they can react with the hydrogen ions to form water molecules, which reduces the acidity of the solution. Thus, the extent of hydrolysis depends on the pH of the solution.

Overall, the hydrolysis of NaH2PO4 and NaHPO4 can contribute to changes in the pH of the solution and the formation of phosphoric acid and its corresponding phosphate ions.