The Temperatures in a Fractionating Tower at an Oil Refinery

question 85

Multiple Choice

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 higher temperature means a greater number of vaporized molecules.
• B)The pressure is greatest at the top because the higher temperature means a greater number of vaporized molecules.
• C)The pressure is greatest at the bottom because the lower 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.

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