1. Calculate the pressure of 0.5634 moles of N2 occupying a volume of 6.5 liters
ID: 718061 • Letter: 1
Question
1. Calculate the pressure of 0.5634 moles of N2 occupying a volume of 6.5 liters at 465.6°C, assuming the van der Waals' a is 1.39 atm-liters-mole2 and b is 0.0318 liters- mole. Give your answer in atmospheres. 2. Calculate the average energy of N2 molecules at 463°C 3. Calculate the constant-pressure coefficient of thermal expansion (Equation 2-35) of 0.6466 moles of N2 occupying a volume of 66.1 liters at 664.2°C, assuming it is an ideal gas. Give your answer in K1 4. Calculate the coefficient of isothermal compressibility (Equation 2-36) of 0.4465 moles of Nz occupying a volume of 46.1 liters at 567.2°C, assuming it is an ideal gas. Give your answer in atm 5. Calculate the ratio of the square root of the root-mean squared speed (Explanation / Answer
Given
No. of moles n = 0.5634 mol
Volume V = 6.5 L
Temperature T = 465.6 C = 738.6 K
Vanderwaal's constants
a = 1.39 atm.lit2.mol-2
b = 0.0318 lit.mol-1
(P + n2.a/V2)(V- nb) = nRT
(P + (0.5634 mol)2.
(P + 0.01045 atm)(6.5 - 0.018)L = 34.15 L.atm
(P + 0.01045 atm) = 34.15 L.atm/6.482L
(P + 0.01045 atm) = 5.268 atm
P = 5.258 atm Answer
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