# Mechanical Engineering - Thermodynamics - Discussion

Discussion Forum : Thermodynamics - Section 7 (Q.No. 11)

11.

The universal gas constant (or molar constant) of a gas is the product of

Discussion:

4 comments Page 1 of 1.
Chethankumar h e said:
6 years ago

The specific gas constant" of a gas or a mixture of gases. It is denoted as Rs and is defined as the universal gas constant divided by the molecular weight (M) of the specific gas or gas mixture.

The adjacent table lists some example values of Rs for a number of gases.

Rs=R/M.

For an ideal gas, the specific gas constant is related to the specific heats the gas:

Rs=cp/cv.

The adjacent table lists some example values of Rs for a number of gases.

Rs=R/M.

For an ideal gas, the specific gas constant is related to the specific heats the gas:

Rs=cp/cv.

Akash said:
7 years ago

The Universal Gas Constant - Ru.

The Universal Gas Constant - Ru - appears in the ideal gas law and can be expressed as the product between the Individual Gas Constant - R - for the particular gas - and the Molecular Weight - Mgas - for the gas, and is the same for all ideal or perfect gases:

Ru = Mgas R --->(1)

where

Ru = universal gas constant

Mgas = molecular weight of the ideal gas or mixture of gases.

The Universal Gas Constant - Ru - appears in the ideal gas law and can be expressed as the product between the Individual Gas Constant - R - for the particular gas - and the Molecular Weight - Mgas - for the gas, and is the same for all ideal or perfect gases:

Ru = Mgas R --->(1)

where

Ru = universal gas constant

Mgas = molecular weight of the ideal gas or mixture of gases.

Babu said:
7 years ago

No @Samujawal.

Because mass of each gas is different so R=R (on top bar-)*M.

Because mass of each gas is different so R=R (on top bar-)*M.

Samujawal said:
1 decade ago

The universal gas const Is not of any particular gas. It's value is the same irrespective of the gas. Although the answer is correct but I think there maybe some problems with the question itself.

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