Question

H3PO4 + H2O=? Фосфор с щелочами (соль и Вода) С основным и амфотерным оксидом С пояснениями!

Answer 1

3NaOH + 4P + 3H2O =3 NaH2PO2 + PH3
остальное не идет

Answer 2

Reaction of H3PO4 with H2O

When phosphoric acid (H3PO4) reacts with water (H2O), it undergoes a dissociation reaction. Phosphoric acid is a triprotic acid, meaning it can donate three protons (H+) in solution. The reaction can be represented as follows:

H3PO4 + H2O → H3O+ + H2PO4-

In this reaction, one molecule of phosphoric acid reacts with one molecule of water to form a hydronium ion (H3O+) and a hydrogen phosphate ion (H2PO4-). The hydronium ion is formed when one of the protons from phosphoric acid is transferred to a water molecule, resulting in the formation of a positively charged ion. The hydrogen phosphate ion is formed when the remaining two protons from phosphoric acid are attached to the phosphate ion.

Phosphorus with Bases

Phosphorus can react with bases to form salts and water. The reaction depends on the strength of the base used. Let's discuss the reactions with both a strong base and an amphoteric oxide.

Reaction with a Strong Base: When phosphorus reacts with a strong base, such as sodium hydroxide (NaOH), it forms a salt called sodium phosphate (Na3PO4) and water (H2O). The balanced chemical equation for this reaction is as follows:

P4 + 6NaOH → 2Na3PO4 + 3H2O

In this reaction, four molecules of phosphorus react with six molecules of sodium hydroxide to produce two molecules of sodium phosphate and three molecules of water.

Reaction with an Amphoteric Oxide: Phosphorus can also react with amphoteric oxides, which are oxides that can act as both acids and bases. An example of an amphoteric oxide is aluminum oxide (Al2O3). When phosphorus reacts with aluminum oxide, it forms aluminum phosphate (AlPO4). The balanced chemical equation for this reaction is as follows:

P4 + 2Al2O3 → 2AlPO4

In this reaction, four molecules of phosphorus react with two molecules of aluminum oxide to produce two molecules of aluminum phosphate.

Explanation

Phosphoric acid (H3PO4) is a weak acid that can donate three protons (H+) in solution. When it reacts with water, it undergoes a dissociation reaction, forming a hydronium ion (H3O+) and a hydrogen phosphate ion (H2PO4-). This reaction is a result of the transfer of protons from phosphoric acid to water.

When phosphorus reacts with a strong base, such as sodium hydroxide (NaOH), it forms sodium phosphate (Na3PO4) and water (H2O). This reaction is a result of the displacement of hydroxide ions (OH-) by phosphate ions (PO43-).

Phosphorus can also react with amphoteric oxides, such as aluminum oxide (Al2O3), to form aluminum phosphate (AlPO4). In this reaction, the amphoteric oxide acts as both an acid and a base, reacting with phosphorus to form the salt.

Please note that the reactions mentioned above are simplified representations and may involve additional steps or intermediates.