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I need explanation at molicular level for the graph.

I need explanation at molicular level for the graph.

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Grade:11

1 Answers

Ramreddy IIT Patna
askIITians Faculty 49 Points
9 years ago
In case of He and H2 the graph is above the Z=1 line implying that they always show positive deviation. If Z>1 then volume of gas particles is dominant(At high pressure) but if Z<1 then volume occupied by gas is less than its volume (if it behaves as an ideal gas). This is due to dominant attractions between gas molecules. Remember on thing
1. Z<1 (attractions dominant)
2. Z>1 (volumeoccupied by gas molecules is not negigible)

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