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Explain the significance of compressibility factor. |
Answer» Solution : (a) In case of ideal GAS, `PV= nRT` thus 2=1 . In this cse the graph of 2 vs P will be straight line with slope =O and its is parallel to pressure axis. (b) In case of real gas `Pv ne nRT` thus, `Z ne1` `{:("Case 1", "Case2"),("If" Z LT 1("NEGATIVE deviation"), "If" Zgt 1("POSITIVE deviation")),(**"Here" PV lt nRT...(1),**"Here" PV gt nRT...(2)),("Relapce nRT by" PV_("ideal") "in eq."(1), "Replace nRT by" PV_("ideal")"in eq"(2)),(":." PV_("real") lt PV_("ideal")or,":." PV_("real")gt PV_("ideal")or),(**"It means gas is more compressibile than expected from ideal behaviour",**"It means gas 1s less compressibile than expected from ideal behaviour"),(**"Attractive forces", **" Repulsive forces"):}` |
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