Water is an ideal amphoteric combination, as it formes equal number of ions H⁺ and OH^-.

1. ACID PROPERTIES OF WATER:

With Na, K and Ca water reacts at usual temperature; with Mg - at boiling.

2. WITH AMPHOTERIC METALS:

With Zn the reaction goes during boiling; with Al, if it is without oxid cover as solution in Rt - at usual temperature; with Fe - at high temperature.

3. WITH THE OXIDS OF ACTIVE METALS:

For example, with CaO (oxids of all metals in a line of voltage up to Mg inclusive).

4. WITH AMMONIA:

Water is the donor of a proton, under the theory of Laury - Bernstad it is an acid. Therefore, it is capable to react with ammonia, as an acid, with formation of the cation of ammonia.

5. HYDROLYSIS OF THE SALTS:

Salt formed by the weak bases, are hydrolysed by water. For example, with CuCl2 hydrolysis goes in steps.

(1^rst step)

1. WITH ACID OXIDS: For example, reaction of water with SO₃ makes H₂SO₄

2. WITH ACIDS:

In this case water is an acceptor of a proton, under the theory of Laura - Bernstad it is the basis.

3. HYDROLYSIS OF THE SALTS:

Salt formed by weak acids, are hydrolysed by water. For the multibasic acids the reaction goes in steps.

(1^rst step)

The atom of oxygen has in water a degree of oxidation -2, and that causes properties of water as a recoveror.

1. With F₂, Cl₂:

2. DECOMPOSITION:

Electrolysis is the reaction of intomolecular oxidation - restoration.

3. WITH MOLECULAR OXYGEN:

1. WITH THE SULFURIC ACID (H₂SO₄):

With a sulfuric acid water forms hydrates.

2. WITH SALTS:

3. WITH GASES

1. WITH ALKENS (C_nH_2n) (adjoining):

2. WITH ALKENS (C_nH_2n) (oxydation):

Reaction of Wagner

3. WITH ALKINS (C_nH_2n-2):

5. WITH COMPLEX ETHERS (ÑR- C -O-R):

6. WITH CaC₂:

7. WITH POLYSACCHARIN: