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At low pressure Vander Waal's equation f...

At low pressure Vander Waal's equation for 3 moles of a real gas will have its simplified from

A

`(PV)/(RT-(3a//V)) = 3`

B

`(PV)/(RT + Rb) = 3`

C

`(PV)/(RT - 3Pb) = 1`

D

`(PV)/(RT - (9//V)) = 3`

Text Solution

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The correct Answer is:
A

Low `P implies` negligible b
`(P + (an^2)/(V^2)) (V) = n^(RT) ,` for 3 moles
`(P + (a xx 9)/(V^2)) (V) = 3RT`
`PV + (9a)/V = 3RT , PV = 3 (RT - (3a)/(V))`
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AAKASH SERIES-STATES OF MATTER-PRACTICE SHEET (EXERCISE -IV) (LEVEL -I MAINS)(STRAIGTH OBJECTIVE TYPE QUESTIONS)
  1. The compressibility factor of an ideal gas is

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  2. The most ideal gas among real gases is

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  3. A real gas deviates most from ideal behaviour at

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  4. If V is the observed molar volume of real gas and V(id) is the molar v...

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  5. At low pressure Vander Waal's equation for 3 moles of a real gas will ...

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  6. Volume of a molecule is related to Vander Waal's constant 'b' and Avag...

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  7. The value of Vander Waal's constant a' is maximum for

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  8. NH(3) gas is liquified more easily than N(2) . Hence :

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  9. Assertion (A): Compressibility factor for hydrogen varies with pressur...

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  10. Compressibility factor (Z = (PV)/(nRT))  is plotted against pressure. ...

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  11. Boyle's temperature of various gases are given below: Which can b...

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  12. A gas can be liquefied by

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  13. A gas can be liquefied by pressure alone when its temperature is

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  14. A gas can be liquefied if :

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  15. The behaviour of temporary gases like CO(2) approaches that of perman...

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  16. The correct formula for reduced pressure and reduced volume are

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  17. Among the following which can be liqufied easily ('a' values given in ...

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  18. Under critical states for one mole of a gas, compressibility factor is

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  19. The cooling caused by the expansion of a compressed gas below its inve...

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  20. When an ideal gas undergoes unrestricted expansion

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