http://www.cleverscampcamp.com/camping-torch-lighters/
How would you set up this up using the vapor pressure equation?
Butane is a common fuel used in cigarette
lighters, camping stoves and cr`eme brulee
torches. Normally supplied in metal contain-
ers under pressure, the fuel exists as a mixture
of liquid and gas, so high temperatures may
cause the container to explode. At 25 oC, the
vapor pressure of butane is 2.3 atm. Which
equation below can be used to determine the
vapor pressure in the container at 150 oC?
(Butane’s Hvap = 24.3 kJ/mol.)
clausius clapeyron equation
ln(P1/P2) = (dHvap / R) x (1/T2 – 1/T1)
P1 = ?
P2 = 2.3 atm
dHvap = 24300 J/mole
R = 8.314 J/moleK
T2 = 150°C = 423 K
T1 = 25°C = 298K
solve for P1.
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