Question

Помогите с заданием по Химии! Нужно решить цепь превращений.1. Mgo -> O2 -> P2O5 -> M3PO4 CaO -> Ca(OH)22. Na -> Na2O -> NaOH

Answer 1

Ответ:

1-ая цепочка:

2MgO → 2Mg + O₂;

4P + 5O₂ → 2P₂O₅;

P₂O₅ + 3M₂O → 2M₃PO₄.

2-ая цепочка:

CaO + H₂O → Ca(OH)₂.

3-ая цепочка:

4Na + O₂ → 2Na₂O;

Na₂O + H₂O → 2NaOH.

Answer 2

Chain of Transformations in Chemistry

To solve the given chain of transformations in chemistry, let's break it down step by step:

1. MgO -> O2 -> P2O5 -> M3PO4

The first transformation is the conversion of MgO to O2. Magnesium oxide (MgO) can be decomposed into magnesium (Mg) and oxygen (O2) gas through a process called thermal decomposition. The balanced equation for this reaction is:

`2MgO -> 2Mg + O2`

The second transformation is the conversion of O2 to P2O5. Oxygen gas (O2) can react with phosphorus (P4) to form diphosphorus pentoxide (P2O5). The balanced equation for this reaction is:

`P4 + 5O2 -> 2P2O5`

The third transformation is the conversion of P2O5 to M3PO4. Diphosphorus pentoxide (P2O5) can react with water (H2O) to form phosphoric acid (H3PO4). The balanced equation for this reaction is:

`P2O5 + 3H2O -> 2H3PO4`

Therefore, the complete chain of transformations is:

`MgO -> O2 -> P2O5 -> M3PO4`

2. CaO -> Ca(OH)2

The transformation here is the conversion of calcium oxide (CaO) to calcium hydroxide (Ca(OH)2). Calcium oxide can react with water to form calcium hydroxide through a process called hydration. The balanced equation for this reaction is:

`CaO + H2O -> Ca(OH)2`

Therefore, the chain of transformation is:

`CaO -> Ca(OH)2`

3. Na -> Na2O -> NaOH

The transformation here involves two steps. First, sodium (Na) reacts with oxygen (O2) to form sodium oxide (Na2O). The balanced equation for this reaction is:

`4Na + O2 -> 2Na2O`

Second, sodium oxide (Na2O) reacts with water (H2O) to form sodium hydroxide (NaOH). The balanced equation for this reaction is:

`Na2O + H2O -> 2NaOH`

Therefore, the chain of transformations is:

`Na -> Na2O -> NaOH`

To summarize, the complete chain of transformations is:

`MgO -> O2 -> P2O5 -> M3PO4` `CaO -> Ca(OH)2` `Na -> Na2O -> NaOH`

Please let me know if you have any further questions!