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Last updated date: 27th Nov 2023
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MVSAT Dec 2023

What will be the compressibility factor $(Z)$ for $He$ gas?
 A. $1$
 B. >$ 1$
 C. <$ 1$

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Hint: We have to know that, in the thermodynamics, the compressibility factor $(Z)$ , otherwise called the pressure factor or the gas deviation factor, is an adjustment factor that portrays the deviation of a genuine gas from ideal gas conduct.

Complete answer:
We have to know, it is just characterized as the proportion of the molar volume of a gas to the molar volume of an ideal gas at a similar temperature and pressing factor. It is a valuable thermodynamic property for adjusting the ideal gas law to represent genuine gas conduct. When all is said in done, deviation from ideal conduct turns out to be more critical the nearer a gas is to a stage change, the lower the temperature or the bigger the pressing factor. Compressibility factor estimates are generally obtained by estimation from conditions of state, for example, the viral condition, which accepts compound-explicit observational constants as info. For a gas that is a combination of at least two unadulterated gases (air or petroleum gas, for instance), the gas arrangement should be known before compressibility can be determined.
On the other hand, the compressibility factor for explicit gases can be perused from summed up compressibility graphs that plot z as an element of the pressing factor at a consistent temperature.
The compressibility factor portrays the deviation of a genuine gas from ideal gas conduct for $He$ gas $Z$ > $ 1$ .

So, that option (B) is correct.

We have to know that, the compressibility factor ought not be mistaken for the compressibility (otherwise called the isothermal compressibility or coefficient of compressibility) of a material, which is the proportion of the overall volume change of a liquid or strong because of a pressing factor change.