Specific Gas Constant
The specific gas constant, denoted as (Rspecific), is the gas constant divided by the molar mass of the gas. It is expressed in units of energy per temperature increment per unit mass. The specific gas constant is commonly represented by the symbol (R) and is used to relate the properties of a particular gas to its molar mass. The specific gas constant is given by the equation:
[ Rspecific = R/M ]
Where:
- R is the Gas constant, and
- M is the Molar mass of the gas.
The value of the specific gas constant depends on the particular gas and is used in various thermodynamic calculations and equations. Value of Specific Gas Constant for some of the most common gases are:
| Gas | Specific Gas Constant Rspecific (J/kg·K) |
|---|---|
| Air (dry) | Approximately 287 |
| Carbon Dioxide (CO2) | Approximately 189 |
| Oxygen (O2) | Approximately 260 |
| Nitrogen (N2) | Approximately 297 |
| Hydrogen (H2) | Approximately 4,124 |
| Helium (He) | Approximately 2,077 |
| Methane (CH4) | Approximately 518 |
| Ammonia (NH3) | Approximately 488 |
Universal Gas Constant
Gas Constant or Universal Gas Constant is a physical constant, represented by the letter R, and is expressed in terms of energy units per mole of temperature increment. The value of the gas constant is the same as that of the Boltzmann constant, but it is expressed as the pressure-volume product rather than the energy per particle increment of temperature. In this article, we will look into what is Universal gas constant, it’s value and uses, etc.
Table of Content
- What is Universal Gas Constant?
- Value of Universal Gas Constant
- Unit of Universal Gas Constant
- Dimensional formula of Gas Constant
- Applications of Universal Gas Constant