Предмет: Химия, автор: sirichenkoinna

як здійснити перетворення KMnO4->O2->P2O3->P2O5

срочно!​

Ответы

Автор ответа: prostochel1085
0

Ответ:

Объяснение:

Перетворення KMnO4 до P2O5 може бути здійснене за допомогою послідовного використання декількох реакцій.

Крок 1: Конвертування KMnO4 до O2

KMnO4 можна зменшити до K2MnO4 за допомогою оксалатної кислоти або насічної кислоти:

5 KMnO4 + 8 H2C2O4 + 2 H2SO4 -> 5 K2SO4 + 2 MnSO4 + 10 CO2 + 8 H2O

або

2 KMnO4 + 5 HNO2 + 3 H2SO4 -> K2SO4 + 2 MnSO4 + 5 NO + 4 H2O

MnSO4 може бути окислений до MnO2, що у свою чергу деградує до O2 під час нагрівання:

2 MnSO4 -> 2 MnO2 + 2 SO2 + O2

Крок 2: Окислення P до P2O3

P2O3 можна отримати з фосфіну, P2H4, який можна одержати з PCl3 та NaBH4:

PCl3 + 3 NaBH4 -> P2H4 + 3 NaCl + 3 BH3

P2H4 може бути окислений до P2O3 повітрям:

P2H4 + 3 O2 -> P2O3 + 2 H2O

Крок 3: Окислення P2O3 до P2O5

P2O3 можна окислити до P2O5 за допомогою концентрованого HNO3:

P2O3 + HNO3 -> P2O5 + NO2 + H2O

Таким чином, послідовне використання цих реакцій дозволяє здійснити перетворення KMnO4 до P2O5.

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