What is the value of the gas constant R in L·atm/(K·mol)?

The value of the gas constant R in the unit L·atm/(K·mol) is 0.0821. This value is derived from the ideal gas law equation, which states that PV = nRT. Here, P represents pressure, V is volume, n is the number of moles of gas, T is temperature in Kelvin, and R is the gas constant that relates these quantities. The specific value of 0.0821 L·atm/(K·mol) is particularly useful when dealing with gases at standard atmospheric conditions in chemistry calculations.

In the context of the ideal gas equation, 0.0821 is significant because it allows for the calculation of one variable in the equation when the others are known, illustrating the relationships between pressure, volume, temperature, and amount of substance. Other variants of R exist, but they are expressed in different units, tailored for specific applications (e.g., 8.314 J/(mol·K) is often used when energy units in joules are involved). Each of these constants facilitates chemistry calculations but depends on the units employed. Thus, understanding that R = 0.0821 L·atm/(K·mol) is essential for calculations involving ideal gases in chemistry.