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Homework Answers
Q1) The average rate of gas is given by
rate = [8RT/(pi)M]1/2
Here both the gases are at same temperautre , thus removing the constant terms
VNh3/ V H2 = [MH2/MNH3]1/2
Substituting the given values
649m/s / V of H2 = [ 2/17]1/2
average velocity of H2 = 1892.13m/s
Q2)
According to Graham's law
rate of difusion is inversely proportional to square root of its molar mass.
Thus
Rate (Ar) / Rate (NH3) = [ MNH3 /M Ar]1/2
3.33x10-4 mol/h /rate NH3 = [ 17/40]1/2
Thus rate of effusion of NH3 = 5.1x10-4 mol/h
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Use the References to access important values if needed for this question. According to the ideal gas law, a 9.845 mol sample of xenon gas in a 0.8342 L container at 500.6 K should exert a pressure of 484.8 atm. What is the percent difference between the pressure calculated using the van der Waals' equation and the ideal pressure? For Xe gas, a -4.194 L'atm/mol and b- 5.105x10-2 L/mol. Pideal - Puan der Waale Percent difference = ! x 100...
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