The temperatures in a fractionating tower at an oil refinery are important, but so are the pressures. Where might the pressure in a fractional distillation tower be greatest, at the bottom or at the top? Defend your answer.
A. The pressure is greatest at the bottom because the lower temperature means a greater number of vaporized molecules.
B. The pressure is greatest at the bottom because the higher temperature means a greater number of vaporized molecules.
C. The pressure is greatest at the top because the higher temperature means a greater number of vaporized molecules.
D. The pressure is greatest at the top because the lower temperature means a greater number of vaporized molecules.
Ans: B. The pressure is greatest at the bottom because the higher temperature means a greater number of vaporized molecules.
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