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 32 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
Gracias!

Hdosisshsbshs

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Mechanisms to Explain the Effects of Massage Mechanisms to Explain the Effects of Massage
Stacking the joints. A. Correct thumb–wrist alignment for applying direct pressure. B. Incorrect ... Stacking the joints. A. Correct thumb–wrist alignment for applying direct pressure. B. Incorrect ...
The overall reaction catalyzed by the NADH dehydrogenase complex The overall reaction catalyzed by the NADH dehydrogenase complex
How many grams of H2 gas can be produced by the reaction of 54.0 grams of Al(s) with an excess ... How many grams of H2 gas can be produced by the reaction of 54.0 grams of Al(s) with an excess ...
In the polymerase chain reaction (PCR) In the polymerase chain reaction (PCR)
The chemical reaction catalyzed by DNA polymerase I The chemical reaction catalyzed by DNA polymerase I
Video: Premenstrual Syndrome

For a complete list of videos, visit our video library