SODIUM AMIDE NaNH2

Properties of Sodium amide NaNH2:

Sodamide. White. Melts without decomposition, sublimes readily, on further heating decomposes. Oxidized in air, and turn yellow (the products are unknown). Poorly soluble in liquid ammonia. Completely hydrolyzed in water, reacts with acids.


Obtaining sodium amide:

2Na + 2 NH3 (gas) = 2NaNH2 + H2 (350°C).

NaH + NH3 (gas) = NaNH2 + H2 (350°C).

NaN3 + H2 = NaNH2 + N2 (200°C, impurity NH3, catalyst Pt).


Reactions with sodium amide:

6 NaNH2 = 6Na + 4NH3 + N2 (500-600°C).

NaNH2 + 2H2O(cold) = NaOH + NH3-H2O

NaNH2 + H2O(hot) = NaOH + NH3↑.

NaNH2 + 2HСl (diluted) = NaCl + NH4Cl.

NaNH2 + 2 HNO3 = NaN3 + NaNO3 + 3H2O (boiling).

NaNH2 + C (coke) = NaCN + H2 (500-600°C).

NaNH2 + NH4Cl = 2NH3 + NaCl (at -40°C, in the liquid NH3).


 

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Graphite can be transformed into diamond by applying a temperature of 3000°C and pressure of 100,000 atm.