INDIUM - In

Properties of Indium:

Silver-white, very soft, plastic, fusible metal. Doesn't change in damp air. Doesn't react with water, alkalis, hydrate of ammonia. Reducer. Is oxidized by acids, oxygen, and other nonmetals.


Molar mass g/mol 114.82
Density g/cm3 7.30
Melting point °C 156.634
Boiling point °C 2024

Methods for preparation of Indium:

In2O3 + 3H2 = 2In + 3H2O (700°C).

In2O3 + 3C(graphite) = 2In + 3CO (800-900°C).

2In2(SO4)3 + 6H2O → Electrolysis → 4In↓(on cathode) + 3O2↑(on anode) + 6H2SO4.


Сhemical reactions with Indium:

2In + 6HCl(diluted) = 2InCl3 + 3H2↑.

In + 2HCl(gas) = InCl2(gas) + H2 (700-970°C).

In + 4HNO3(diluted, hot) = In(NO3)3 + NO↑ + 2H2O.

4In + 3O2 = 2In2O3 (800°C, burning on air).

2In + 3Cl2 = 2InCl3 (120-150°C).

2In + 3S = In2S3 (1050-1100°C).

2In + CO2 = In2O + CO (850°C).

2In + H2S = In2S + H2 (700-800°C).


 

Did you know?

If you slowly pour a handful of salt into a completely full glass of water, it will not overflow. In fact, the water level will go down.