Problem 2: [13]

A large industrial waste collection tank contains 1500 ft of butyl alcohol, 2500 ft of benzene,

and 2000 ft of water at 80 °F that have separated into three distinct phases. The diameter of the

circular tank is 10 feet and its total depth is 95 feet. The tank is under pressure (air at top that is

pressurized) and the gauge at the top of the tank reads 2116 lb ft

a) [2] Determine the order of the components in the tank and draw a diagram.

b) [4] Determine the pressure at each interface in psi.

c) [2] Determine the pressure at the bottom of the tank.

d) [2] Make a sketch of the pressure (y-axis) as a function of height in the tank, z (x axis).

Sketch is by hand. No numbers are required but the location of each interface should be

indicated.