CHEMISTRY 1414
Spring 2011
Practice Problem Set 6
Question 1
Under non-ideal conditions, calculate the pressure exerted by a 77.45 g sample of boron
trifluoride BF
3
that is contained in a 14.75 L cylinder at 15.6 °C.
For BF
3
, a = 3.92 atm
L
2
/mol
2
and b = 0.05443 L/mol.
Question 2
Calculate the root mean square speed for the following gas samples:
a)
. A sample of SiF
4
at 33.5 °C.
b)
. A sample of HCN at 17.92 °C.
Question 3
Calculate the kinetic energy of the following gas samples:
a)
. A sample of Cl
2
at 55.27 °C.
b)
. A sample of pentane at 42.11 °C.

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