Question

Na→Na2O→NaOH→NaH2PO4→Na2HPO4

Answer 1

Ответ:

1) Na+ Na2O2---->2Na2O

2) Na2O + H2O---->2NaOH

3) Na2HPO4 + NaOH---->Na3PO4 +H2O

4) Na3PO4 + H2SO4 -----> NaH2PO4 + Na2SO4

Объяснение:

Answer 2

It seems like you've provided a sequence of chemical reactions involving sodium (Na) and various compounds. Let's break down each step of the reaction sequence:

1. Na: This is the chemical symbol for sodium, a metallic element commonly found in nature.

2. Na2O: This represents sodium oxide, which is formed when sodium reacts with oxygen (O). The reaction can be represented as:

   4 Na + O2 → 2 Na2O

3. NaOH: This stands for sodium hydroxide, also known as caustic soda. Sodium hydroxide is a strong base, and it is produced through a reaction between sodium oxide and water (H2O):

   Na2O + H2O → 2 NaOH

4. NaH2PO4: This represents sodium dihydrogen phosphate, which is a salt formed by the reaction of sodium hydroxide with phosphoric acid (H3PO4):

   NaOH + H3PO4 → NaH2PO4 + H2O

5. Na2HPO4: This stands for disodium hydrogen phosphate, another salt formed by the reaction of sodium hydroxide with phosphoric acid. It can be considered as the deprotonation of sodium dihydrogen phosphate:

   NaH2PO4 + NaOH → Na2HPO4 + H2O

So, in summary, the sequence of reactions involves the transformation of sodium (Na) into various compounds including sodium oxide (Na2O), sodium hydroxide (NaOH), sodium dihydrogen phosphate (NaH2PO4), and disodium hydrogen phosphate (Na2HPO4), with each step involving different reactants and products.