1 what experimental conditions volume pressure and

Question

Real Gas Law: Gravimetric Determination of the Second Virial Coefficient of CO₂

1. What experimental conditions (volume, pressure, and temperature) are conducive to ideal gas behavior?

2. Define the compression factor (Z). Is Z going to be larger or smaller than 1 for a gas in which attractive forces dominate?

3. A student plots Z-1 versus (1/V_m) based on data collected during an isothermal expansion of CO₂. What would you expect the y-intercept to be and why is this so?

4. The precision (readability) of your balance is 1 mg, this means masses under 0.5 mg cannot be detected. The volume of the vessel is 0.5 L and temperature is 25^oC. Assuming ideal gas law conditions, what is the maximum pressure in a vessel containing CO₂, in which the residual mass cannot be detected?

5. (A) Calculate the molar volume of CO₂ at 25^oC and 10 bar by treating it as a van der Waals gas (a = 3.610 atm L² mol^-2 ; b = 4.29 × 10^-2 L mol^-1).

(B) Calculate the molar volume of CO² gas at a temperature of 25^oC and pressure of 10 bar using the ideal gas law.

(C) Determine the percent deviation from ideality for the van der Waals gas.