Reaction with air/oxygen:Ammonia does not burn in air. At 68°F, about 700 volumes of vapor can be dissolved in one volume of water to make a solution containing 34 percent ammonia by weight. Structural, Chemical and Physical Properties of Ammonia Physical Properties Property Value or Detail Molecular Mass 17.03 g/mol Colour Colourless Odour Sharp, Intensely Irritating Physical State Gas (at room temperature) Melting Point -77.7°C Boiling Point -33.35°C Flash Point 11°C Decomposition Point 500°C Density (Gas) 0.7710g/L Density (Liquid) 0.6818g/L … Ammonia is lighter than air with a density of 0.769 kg/m3 at STP. If values are given for liquid ammonia at ambient temperature, the ammonia is pressurized above 1 atm. Incompatible with many materials including silver and gold salts, halogens, alkali metals, nitrogen trichloride, potassium chlorate, chromyl chloride, oxygen halides, acid vapors, azides, ethylene oxide, picric acid and many other chemicals. Action of heat: Ammonia is heated above 500°C decomposes into its elements. Decomposition creates toxic gases containing ammonia and nitrogen oxides. So, Le- Chatelier’s principle … Home Chemical Properties: Ammonia (NH3) Ammonia is more than that scalding chemical that you use to clean your house. Catalyst used – (Fe 2 O 3).It only speeds up the reaction, doesn’t changes its yield. Properties of Ammonia 1. The chemical properties of ammonia include ammonia having high stability, being combustible in air, and forming nitric oxide when combined with a platinum-rhodium catalyst at approximately 800°C. Ammonia is a colourless gas with a characteristic pungent smell and hazardous in its concentrated form.. Chemical, physical and thermal properties of Ammonia, NH 3: Values at 25 o C /77 o F / 298 K and 1 atm., if not other temperature and pressure given. Ammonia in solution is widely available, and it is often referred to as ammonium hydroxide and has been also historically referred to as “spirit of hartshorn” (Windholz 1983). Also included are some chemical and physical properties of ammonia in solution. Ammonia in container may explode in heat of fire. It is a weak base that combines with numerous acids to form ammonium salts that are important in chemical industries. It is a reaversible chemical reaction doesn’t go to 100% completion. When a mixture of nitrogen and hydrogen gas in the ratio 1:3 by volume is heated at a temperature of 450-500 0 C and 200-900 atmospheric pressure in the presence of iron as catalyst and molybdenum as promoter, ammonia gas is produced.. This inorganic compound has a pungent smell. The physical and chemical properties of ammonia are presented in Table 4-2. Pressure of 200 atm. Conditions for optimum yield of ammonia : The reaction is exothermic, reversible and occurs with a decrease in volume. What is Ammonia? Ammonia in solution is widely available, and it is often referred to as ammonium hydroxide and has been also historically referred to as “spirit of hartshorn” (Windholz 1983). Ammonia is a colorless gas with a chemical formula NH 3. It consists of hydrogen and nitrogen. Ammonia as a Fertilizer: Plants need nitrogen as on eof components for growth and ammonium fertilizers contain Nitrogen for that. The physical and chemical properties of ammonia are presented in Table 4-2. Chemical Properties: Anhydrous ammonia is easily absorbed by water. In its concentrated form, it is dangerous and caustic. . Ammonia in water solution is called aqua ammonia or ammonium hydroxide. Moreover, it readily dissolves in water in an exothermic reaction, to form an aqueous ammonia solution that we … Chemical Properties of Ammonia. In its aqueous form, it is called ammonium hydroxide. 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