【Daily Question】Chemical Engineering Principles 131: Distillation Operations (August 5)
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The Chemical Engineering Theory section is launching the \"One Question per Day\" campaign starting today, aimed at helping everyone reinforce their basic knowledge of chemical engineering. Subsequent series will include those on \"Principles of Chemical Engineering,\" \"Mass Transfer and Separation,\" \"Thermodynamics in Chemical Engineering,\" and \"Chemical Process Engineering.\" We hope you will give it your active support! Answers to the questions in the \"One Question per Day\" campaign can be viewed directly by replying, and this thread will be closed after 1 day! ! Participation earns 2 wealth points, with an additional 3 wealth points for correct answers~~~ Multiple-choice question: In distillation operations, if all other conditions remain unchanged and only the reflux of the subcooled liquid at the top of the tower is changed to bubble-point reflux, what will be the change in the composition of the product at the top of the tower? A. Become smaller ； B、Grow larger ； C、Unchanged ； D、Uncertain ； A
In distillation operations, if all other conditions remain unchanged and the subcooled liquid reflux at the top of the tower is replaced with bubble-point reflux, the composition of the product at the top of the tower changes to (A: become smaller).
In distillation operations, if all other conditions remain unchanged and the subcooled liquid reflux at the top of the tower is replaced with bubble-point reflux, the composition of the product at the top of the tower changes to (B). A. Become smaller ； B、Grow larger ；
A, get smaller A, get smaller A, get smaller A, get smaller A, get smaller
In distillation operations, if all other conditions remain unchanged and the subcooled liquid at the top of the tower is changed from being recycled in a subcooled state to being recycled at its bubble point, then the composition of the product at the top of the tower will change to ( ) B. Increase
C, unchanged. －－－－－－－－
D should be D, right? . I’m a complete novice. . .
Multiple-choice question: In distillation operations, if all other conditions remain unchanged and the subcooled liquid at the top of the tower is changed from being recycled in a subcooled state to being recycled at the bubble point, then the composition of the product at the top of the tower will change to (A). A. Become smaller ； B、Grow larger ； C、Unchanged ； D、Uncertain ；