AP chemistry

Liquid butane, C4H10, is stored in cylinders, to be used as a fuel. The normal boiling point of butane is listed as -0.5 C. (a) suppose the tank is standing in the sun and reaches a temperature of 35 C. Would you expect the pressure in the tank to be greater or less than atmospheric pressure? How does the pressure within the tank depend on how much liquid butane is in it? (b) suppose the valve to the tank is opened and a few liters of butane are allowed to escape rapidly. What do you expect would happen to the temperature of the remaining liquid butane in the tank? Explain.

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  1. b pressure depends on temperature, not amount of liquid level.

    c. Pressure depends on temperature, not the amount of liquid left. If the energy in the gas is released from the inner tank contents, the remaining will be cooler.

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    bobpursley
  2. 5.41 kJ

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