In its concentrated form, it is dangerous and caustic. Home Chemical Properties: Ammonia (NH3) Ammonia is more than that scalding chemical that you use to clean your house. 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 is lighter than air with a density of 0.769 kg/m3 at STP. 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 as a Fertilizer: Plants need nitrogen as on eof components for growth and ammonium fertilizers contain Nitrogen for that. Chemical Properties of Ammonia. Properties of Ammonia 1. Ammonia in container may explode in heat of fire. The physical and chemical properties of ammonia are presented in Table 4-2. 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. The physical and chemical properties of ammonia are presented in Table 4-2. The resulting nitrogen oxides will support combustion, even in the absence of other oxygen.The resulting heat and pressure from the decomposition of ammonium nitrate may build up if the reaction takes place in a confined space and the heat and gases created are not able to dissipate. Action of heat: Ammonia is heated above 500°C decomposes into its elements. Reaction with air/oxygen:Ammonia does not burn in air. 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). Moreover, it readily dissolves in water in an exothermic reaction, to form an aqueous ammonia solution that we … 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. Also included are some chemical and physical properties of ammonia in solution. It is a weak base that combines with numerous acids to form ammonium salts that are important in chemical industries. Conditions : Temperature of 450C. This inorganic compound has a pungent smell. . Also included are some chemical and physical properties of ammonia in solution. Ammonia is a colorless gas with a chemical formula NH 3. 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). If values are given for liquid ammonia at ambient temperature, the ammonia is pressurized above 1 atm. Conditions for optimum yield of ammonia : The reaction is exothermic, reversible and occurs with a decrease in volume. Chemical Properties: Anhydrous ammonia is easily absorbed by water. It consists of hydrogen and nitrogen. 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. In its aqueous form, it is called ammonium hydroxide. 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.. 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