Question
Question: In the equation of state of an ideal gas \(PV=nRT\), the value of universal gas constant would depen...
In the equation of state of an ideal gas PV=nRT, the value of universal gas constant would depend only on:
(A) the nature of the gas
(B) the pressure of the gas
(C) the units of the measurement
(D) none of the above
Solution
The ideal gas law, also called the general gas equation, is the equation of state of a hypothetical ideal gas. It is a good approximation of the behaviour of many gases under many conditions, although it has several limitations.
Complete step by step answer:
We have been provided with ideal gas equation, PV=nRT:
Where P = pressure, V = volume, n = amount of substance, R = gas constant, T = temperature.
We need to tell that the value of universal gas constant would depend upon which of the following factors,
So, for that,
An ideal gas is a gas that conforms, in physical behaviour, to a particular, idealized relation between pressure, volume, and temperature called the ideal gas law. A gas does not obey the equation when conditions are such that the gas, or any of the component gases in a mixture, is near its condensation point.
The value of universal gas constant that is R: R=8.314Jmol−1K−1,
It can also be written as: R=0.082Latm1mol−1K−1 and 1.987Cal1mol−1K−1,
So, we can say that the universal gas constant depends only on the units of the measurement,
Therefore, option (C) is correct.
Note: The ideal gas law relates the four independent physical properties of a gas at any time. The ideal gas law can be used in stoichiometry problems in which chemical reactions involve gases. Standard temperature and pressure (STP) are a useful set of benchmark conditions to compare other properties of gases.