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

Author Question: Explain why the following are incorrect practices while heating a macroscale reaction under reflux. ... (Read 20 times)

anjilletteb

  • Hero Member
  • *****
  • Posts: 569
on: Aug 23, 2018

Explain why the following are incorrect practices while heating a macroscale reaction under
  reflux.
  (a) The water to the condenser jacket is not turned on.
  (b) A gentle reflux is used rather than a vigorous reflux.
  (c) The heat is adjusted so that the reflux level is at the very top of the condenser.
  (d) The heat is adjusted so that the solvent in the reaction flask is not boiling.



Question 2

Why should a reaction never be carried out in a closed system?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kishoreddi

  • Sr. Member
  • ****
  • Posts: 329
    • Your online Help in Biology and chemistry
Reply #1 on: Aug 23, 2018
Answer to Question 1

(a) The solvent vapors will escape from the system instead of condensing and returning to the
reaction mixture.
(b) The temperature of the boiling liquid is the same whether the liquid is boiling gently or
vigorously.
(c)
(d)



Answer to Question 2

Pressure can build up in the system and cause it to explode and possibly injure people.


anjilletteb

  • Member
  • Posts: 569
Reply 2 on: Aug 23, 2018
YES! Correct, THANKS for helping me on my review

hollysheppard095

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

The human body produces and destroys 15 million blood cells every second.

Blood-typing and cross-reactions: The blood type depends on the presence of surface antigens (agglut Blood-typing and cross-reactions: The blood type depends on the presence of surface antigens (agglut
Antibody techniques. The specific reaction of an antibody with its antigen Antibody techniques. The specific reaction of an antibody with its antigen
Historian James Merrell notes several errors in Benjamin West’s famous 1771 painting, William Penn’s Historian James Merrell notes several errors in Benjamin West’s famous 1771 painting, William Penn’s
An oscillating needle 1 or 2 inches Hg below normal could indicate an incorrect air–fuel mixture ... An oscillating needle 1 or 2 inches Hg below normal could indicate an incorrect air–fuel mixture ...
The overall reaction catalyzed by the NADH dehydrogenase complex The overall reaction catalyzed by the NADH dehydrogenase complex
What is the value for Kp for this reaction? What is the value for Kp for this reaction?
Video: Bulk flow - Factors that influence bulk flow

For a complete list of videos, visit our video library