Consider 1.0-mol samples of CO₂ and He under the two sets of conditions listed

CHEMISTRY · Single correct · GCSE · Chemistry · Bonding, Structure and the Properties of Matter · Properties of small molecules

Problem

Consider 1.0-mol samples of CO₂ and He under the two sets of conditions listed. I. 200 K, 1 atm II. 300 K, 150 atm Which statement correctly compares the sign of each gas’s deviation, expressed as the compressibility ratio Z=PV/nRTZ = PV/nRT, under the two conditions? (a) I: ZCO2>ZHeZ_{\text{CO}_2} > Z_{\text{He}};\tII: ZCO2<ZHeZ_{\text{CO}_2} < Z_{\text{He}} (b) I: ZCO2<ZHeZ_{\text{CO}_2} < Z_{\text{He}};\tII: ZCO2>ZHeZ_{\text{CO}_2} > Z_{\text{He}} (c) I: ZCO2>ZHeZ_{\text{CO}_2} > Z_{\text{He}};\tII: ZCO2>ZHeZ_{\text{CO}_2} > Z_{\text{He}} (d) I: ZCO2<ZHeZ_{\text{CO}_2} < Z_{\text{He}};\tII: ZCO2=ZHeZ_{\text{CO}_2} = Z_{\text{He}}

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