For a particular gas at

CHEMISTRY · Subjective · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

For a particular gas at 285 K285\,\text{K}, experimental data give Z=0.97Z = 0.97 at 2 atm2\,\text{atm}, Z=0.99Z = 0.99 at 5 atm5\,\text{atm}, and Z=1.02Z = 1.02 at 8 atm8\,\text{atm}. Assuming ZZ varies linearly with pressure in this range, determine the pressure (to the nearest whole atmosphere) at which the gas behaves most ideally (Z≈1Z \approx 1).

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