Ammonia (NH3) is a compound made of nitrogen and hydrogenatoms. It is a colorless gas with a pungent odor and is commonly used in various industrial and household applications.
Properties of Ammonia
Ammonia has several important properties:
It is highly soluble in water, forming an alkaline solution.
It is lighter than air and can be easily liquefied under pressure.
Ammonia acts as a weak base in water, forming ammonium ions (NH4+) and hydroxide ions (OH-). It can also act as a ligand in coordination complexes due to its lone pair of electrons, forming ammine complexes with various metalions.
While ammonia has many practical applications, it is important to handle it with care due to its toxicity and potential for causing respiratory irritation. Proper ventilation and personal protective equipment should be used when working with ammonia to ensure safety.
Study Guide
When studying ammonia, it is important to focus on the following key points:
Health and safety considerations when handling ammonia.
Understanding these concepts will provide a comprehensive foundation for grasping the significance of ammonia in various scientific and practical contexts.
Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.
Energy
Students who demonstrate understanding can:
Create a computational model to calculate the change in the energy of one component in a system when the change in energy of the other component(s) and energy flows in and out of the system are known.
Plan and conduct an investigation to provide evidence that the transfer of thermal energy when two components of different temperature are combined within a closed system results in a more uniform energy distribution among the components in the system (second law of thermodynamics).