The equation PV = nRT is called the ideal gas law. It states that pressure times volume equals the number of moles of gas molecules times temperature times the ideal gas constant. By convention, pressure is converted into atmospheres (atm), volume into liters (L) and temperature into degrees Kelvin (K).Continue Reading
Chem Guide explains that by rearranging the equation, the units of the ideal gas constant R are L x atm / moles x K, and the value of R is 0.082057 L atm / (mol K). In other unit systems, especially SI, the units of R are Joules / (mol K), and its value is 8.314.
At standard temperature and pressure, or 1 atmosphere and 273 K, 1 mole of gas occupies 22.4 liters. The equation accurately predicts the behavior of actual gases across a range of pressures and temperatures. Under extreme conditions, however, actual gases deviate from ideal behavior. At low temperatures or high pressures, for example, gas molecules do not collide elastically but instead clump together to form liquid droplets.Learn more about States of Matter
Boyle's law, the principle that the pressure on a gas is inversely proportional to its volume at constant temperatures, is demonstrable with everything from balloons to soda cans to SCUBA gear. Aerosol cans and syringes both rely on Boyle's law in order to perform their functions as well.Full Answer >
An example of the law of conservation of mass is the combustion of a piece of paper to form ash, water vapor and carbon dioxide. In this process, the mass of the paper is not actually destroyed; instead, it is transformed into other forms. This best demonstrates the law that states matter cannot be created or destroyed. However, the form of matter can be changed.Full Answer >
The process of condensation occurs when molecules of gas lose thermal energy which causes them to change into a liquid state. Condensation is a change in the physical state of matter and the process is the opposite of evaporation. The word condensation frequently refers to the water cycle, defining the change of state that occurs when water vapor condenses into a liquid after coming into contact with a colder surface or environment.Full Answer >
A gas evolution reaction is a chemical reaction that results in the production of a gas. For example, a gas evolution reaction potentially produces oxygen or carbon dioxide.Full Answer >