Table of Contents
- 1 What are the laboratory preparation of nitrogen?
- 2 How is nitrogen dioxide prepared in the laboratory?
- 3 What is the occurrence of phosphorus?
- 4 What is the purpose of burning phosphorus in the preparation of nitrogen gas?
- 5 What are nitrogen and phosphorus used for in humans?
- 6 What’s the chemical formula for phosphorus?
- 7 How is the preparation of orthophosphoric acid done?
- 8 How is phosphorus pentachloride prepared in the gas phase?
What are the laboratory preparation of nitrogen?
In the laboratory, N2 is prepared by heating an aqueous solution of ammonium chloride and sodium nitrite. Small amounts of nitric oxide and nitric acid are also formed in this reaction.
How is nitrogen dioxide prepared in the laboratory?
It is possible to prepare nitrogen dioxide in the laboratory by heating the nitrate of a heavy metal, or by the reduction of concentrated nitric acid with copper metal, as shown in [link]. Commercially, it is possible to prepare nitrogen dioxide by oxidizing nitric oxide with air.
What are phosphorus and nitrogen primarily used for explain why these elements are so important?
Nitrogen and phosphorus are nutrients that are natural parts of aquatic ecosystems. Nitrogen is also the most abundant element in the air we breathe. Nitrogen and phosphorus support the growth of algae and aquatic plants, which provide food and habitat for fish, shellfish and smaller organisms that live in water.
What does phosphorus and nitrogen make?
When phosphorus forms an ion with the same oxidation number, it is the phosphate, PO43-, ion, as shown in the figure below. Similarly, nitrogen forms nitric acid, HNO3, which contains an N=O. double bond, whereas phosphorus forms phosphoric acid, H3PO4, which contains P-O single bonds, as shown in the figure below.
What is the occurrence of phosphorus?
Because of its chemical activity phosphorus does not occur uncombined in nature but is widely distributed in many minerals. A major source is apatite, an impure calcium phosphate mineral found in phosphate rocks. In the United States major deposits are found in Florida, Tennessee, Montana, and Idaho.
What is the purpose of burning phosphorus in the preparation of nitrogen gas?
Phosphorus ignites at approximately 86°F (30°C) in air; the ignition temperature is higher when the air is dry. Phosphorus reacts violently with oxidants, halogens, some metals, nitrites, sulfur, and many other compounds, causing a fire hazard. The agent burns rapidly, releasing dense, white irritating fumes.
How is nitrogen prepared industrially?
Industrial nitrogen gas is produced by cryogenic fractional distillation of liquefied air, separation of gaseous air by adsorption, or permeation through membranes. Cryogenic distillation of air is the oldest method of nitrogen production and was developed in 1895 (1).
What is the purpose of burning phosphorus in the preparation of nitrogen in air?
What are nitrogen and phosphorus used for in humans?
It is essential for the creation of DNA, cell membranes, and for bone and teeth formation in humans. It is vital for food production since it is one of three nutrients (nitrogen, potassium and phosphorus) used in commercial fertilizer.
What’s the chemical formula for phosphorus?
It has a tetrahedral shape and has the formula P4. The two main forms of phosphorus are white phosphorus and red phosphorus.
What is nitrogen and phosphorus cycle?
The nitrogen cycle involves the uptake of nitrogen form the atmosphere by a process called fixation which is carried out by microbes or industrial processes. Phosphorus in the environment is mainly found in rocks, and natural weathering processes can make it available to biological systems.
Dinitrogen trioxide, N 2 O 3, only exists in liquid or solid states and has these molecular (left) and resonance (right) structures. It is possible to prepare nitrogen dioxide in the laboratory by heating the nitrate of a heavy metal, or by the reduction of concentrated nitric acid with copper metal, as shown in Figure 5.
How is phosphorus prepared in the industrial process?
The industrial preparation of phosphorus is by heating calcium phosphate, obtained from phosphate rock, with sand and coke: The phosphorus distills out of the furnace and is condensed into a solid or burned to form P 4O 10. The preparation of many other phosphorus compounds begins with P 4O 10.
How is the preparation of orthophosphoric acid done?
The two common methods for preparing orthophosphoric acid, H 3 PO 4, are either the reaction of a phosphate with sulfuric acid or the reaction of water with phosphorus (V) oxide. Orthophosphoric acid is a triprotic acid that forms three types of salts.
How is phosphorus pentachloride prepared in the gas phase?
Phosphorus pentachloride is an off-white solid that is prepared by oxidizing the trichloride with excess chlorine. The pentachloride sublimes when warmed and forms an equilibrium with the trichloride and chlorine when heated. Figure 3. This image shows the molecular structure of PCl 3 (left) and PCl 5 (right) in the gas phase.