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Which one of the gases, under the given ...

Which one of the gases, under the given conditions, exhibits reas gas behaviour ? (1) 0.25 mol `CO_(2)`, T=1200K, P=24.63 atm, V=1L
(2) 1.0 mol `SO_(2)`, T=300K, P=50 atm, V=0.35 L.

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At a certain temperature and rpessure, if the compressibility facotor (Z) of a gas is less than or more than 1, then at that temperature and pressure the gas behaves as a real gas. If Z=1, then the gas exhibits ideal behaviour.
For `CO_(2)` gas, `Z=(PV)/(nRT)=(24.63xx1)/(0.25xx0.0821xx1200)=1`
For `SO_(2)` gas, `Z=(PV)/(nRT)=(50xx0.35)/(1xx0.0821xx300)=0.71`
Under the given conditions, for `CO_(2)` gas, Z=1 and hence it shows ideal behaviour.
In the case of `SO_(2)`, `Z lt 1`. so, under the given conditions, `SO_(2)` behaves as a real gas.
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