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Compressibility Factor

The curve of ...

Question

The curve of pressure volume (PV) against pressure (P) of the gas at a particular temperature is as shown, according to the graph which of the following is /are incorrect (in the low pressure region):

A

H_{2}

and

H e

show positive deviation from ideal gas equation.

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B

C O_{2}, C H_{4}

and

O_{2}

show negative deviation from ideal gas equation.

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C

H_{2}

and

H e

show negative deviation while

C O_{2}, C H_{4}

and

O_{2}

show positive deviation.

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D

H_{2}

and He are less compressible than that of an ideal gas while

C O_{2}, C H_{4}

and

O_{2}

more compressible than that of ideal gas.

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Solution

The correct option is C $H_{2}$ and $H e$ show negative deviation while $C O_{2}, C H_{4}$ and $O_{2}$ show positive deviation.
We know that, if Z > 1 positive deviation, Z < 1 negative deviation.
From given graph, $H_{2}, H e$ shows positive deviation from ideal gas equation. $C O_{2}, C H_{4}, O_{2}$ shows negative from ideal gas equation.

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Similar questions

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Compressibility Factor

Standard XII Chemistry

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