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Compressibility factor of a gas is given...

Compressibility factor of a gas is given by the equation `Z=(PV)/(nRT)`. On this basis , mark the correct statement.

A

When `Z gt 1`, real gases get compressed easily.

B

When `Z = 1`, real gases get compressed easily.

C

When `Z gt 1`, real gases are difficult to compress

D

When `Z=1` real gases are difficult to compress

Text Solution

Verified by Experts

The correct Answer is:
C
In case of real, `PV = nRT`, therefore `Z = 1 `
When `Z gt 1` , it is a positive deviation . It shows that the gas is less compressible expected from ideal behaviour.
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Knowledge Check

  • Compressibility factor of a gas given by the equation Z= PV//nRT . On this basis, mark the correct statement

    A
    When `Z gt 1`, real gases get compressed easily.
    B
    When `Z = 1`, real gases get compressed easily.
    C
    When `Z gt 1`, real gases are difficult to compress
    D
    When `Z=1` real gases are difficult to compress

  • In the gas equation, PV = nRT

    A
    V denotes volume of one mole
    B
    n is the number of molecules of a gas
    C
    n moles of gas have volume V
    D
    P is pressure of gas when only one mole of gas is present

  • The compressibility factor (Z) for an ideal gas is :

    A
    `1.5`
    B
    `1.0`
    C
    `2.0`
    D
    zero

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