کل واکنش های عنصر ایندیم
پنجشنبه, ۳۰ مهر ۱۳۹۴، ۰۹:۴۸ ق.ظ
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 the 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).