This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which of the following circumstances might contribute to column flooding and why? (a) holes in ... (Read 33 times)

tiara099

  • Hero Member
  • *****
  • Posts: 588
on: Aug 23, 2018

Which of the following circumstances might contribute to column flooding and why?
  (a) holes in column packing
  (b) packing too tight
  (c) heating too rapidly
  (d) column too cold



Question 2

Why is a fractionation column packed with glass helices more efficient than a Vigreux column
  of the same length and same diameter?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

yasmina

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Aug 23, 2018
Answer to Question 1

Any one of the listed conditions could lead to flooding:
(a) because vapor can build up excessively, then condense
(b) because the column may be partially plugged (not allowing vapors to ascend freely) adn
because the increased surface area of teh packing allows excellive condensation
(c) and (d) because excessive condensation in the column will occur



Answer to Question 2

The larger surface area of the helices permits more condensation-vaporization steps, thus
increasing thnumber of theoretical plates.



tiara099

  • Member
  • Posts: 588
Reply 2 on: Aug 23, 2018
Excellent

lkanara2

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Bones of the spinal column. Bones of the spinal column.
DISTILLATION/ABSORPTION COLUMN DESIGN DISTILLATION/ABSORPTION COLUMN DESIGN
The two most common deformities of the spinal column are scoliosis and kyphosis. The two most common deformities of the spinal column are scoliosis and kyphosis.
Vertebral column. Avoid heavy pressure directly over spinous processes. Vertebral column. Avoid heavy pressure directly over spinous processes.
Anterior View of the Spinal Column Showing Anterior and Posterior Longitudinal Ligaments Anterior View of the Spinal Column Showing Anterior and Posterior Longitudinal Ligaments
Ligaments and Intervertebral Discs of the Spine Lateral View of the Spinal Column (Anterior to the R Ligaments and Intervertebral Discs of the Spine Lateral View of the Spinal Column (Anterior to the R
Video: X chromosome inactivation in calico cats

For a complete list of videos, visit our video library