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Real Gas Equation

At lower temp...

Question

At lower temperatures, all gases except $H_{2}$ He shows:

A

negative deviation

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B

positive deviation

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C

positive and negative deviation

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D

none of the above

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Solution

The correct option is A negative deviation
For $H_{2}, H e$ Z>1 due to repulsive forces.

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Gases posses charcteristic critical temperature which depends upo the magnitude of intermolecular forces between the particles. Following are the critical temperatures of some gases.

$\begin{matrix} G a s e s & H_{2} & H e & O_{2} & N_{2} C r i t i c a l t e m p e r a t u r e i n K e l v i n & 33.2 & 5.3 & 154.3 & 126 \end{matrix}$

From the above data what would be the order of liquefaction of these gases? Start writing the order from the gas liquefying first

(a) $H_{2}, H e, O_{2}, N_{2}$ (b) $H e, O_{2}, H_{2}, N_{2}$

(c) $N_{2}, O_{2}, H e, H_{2},$ (d) $O_{2}, N_{2}, H_{2}, H e$

Q. Equal volume of

H_{2}, O_{2}

and he gases are at temperature and pressure .Which of these with large number of molecules:

Q. All non-metals are solids or gases, except bromine which is liquid non-metal at room temperature.

H_{2} H e O_{2} N_{2}

Critical temperature(K) 33.2 5.3 154.3 126

From the above data what whould be the order of liquefaction of these gases?
Start writing the order from the gas liquefying first.

Q. Four one liter flasks are separately filled with the gases

H_{2}, H e, O_{2}, O_{3}

at the same temperature and pressure. The ratio of the weights of these gases is:

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