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Points I, II and III in the following plot respectively correspond to

(V

(V

_{mp}: most probable velocity)2

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Out of Syllabus

Consider the following table :

a and b are vander Waals constants. The correct statement about the gases is :

Gas | a/(k Pa dm^{6} mol^{-1}) |
b/(dm^{3} mol^{-1}) |
---|---|---|

A | 642.32 | 0.05196 |

B | 155.21 | 0.04136 |

C | 431.91 | 0.05196 |

D | 155.21 | 0.4382 |

a and b are vander Waals constants. The correct statement about the gases is :

3

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Out of Syllabus

At a given temperature T, gases Ne, Ar, Xe and
Kr are found to deviate from ideal gas
behaviour. Their equation of state is given as

$$p = {{RT} \over {V - b}}$$ at T.

Here, b is the van der Waals constant. Which gas will exhibit steepest increase in the plot of Z (compression factor) vs p?

$$p = {{RT} \over {V - b}}$$ at T.

Here, b is the van der Waals constant. Which gas will exhibit steepest increase in the plot of Z (compression factor) vs p?

4

JEE Main 2019 (Online) 9th April Morning Slot

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Out of Syllabus

Consider the van der Waals constants, a and b,
for the following gases.

Which gas is expected to have the highest critical temperature?

Gas | Ar | Ne | Kr | Xe |
---|---|---|---|---|

a/ (atm dm^{6} mol^{–2}) |
1.3 | 0.2 | 5.1 | 4.1 |

b/ (10^{–2} dm^{3} mol^{–1}) |
3.2 | 1.7 | 1.0 | 5.0 |

Which gas is expected to have the highest critical temperature?

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