The equation of state for mass m of an ideal gas may be written pV=mrT.
點解 The value of r depends upon the particular gas used?
r 不是固定的嗎 ? 在這裡是否指 Universal Gas Constant?
Physics - Matter
2010-08-28 1:04 am
回答 (1)
2010-08-28 1:53 am
✔ 最佳答案
The "r" here in your equation is NOT the Universal Gas Constant, because you have used the mass of gas m in your equation.The form of equation where the Universal Gas Constant R is used is:
pV nRT
where n is the number of mole of gas.
The relation between m, r, n and R is,
since n = m/M, where M is the molar mass of a particular gas
hence, nR = (m/M).R
i.e. r = R/M
thus r depends on the gas type.
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