« previous next »

Author Question: Why is it important to use dry tubes for the reactions involving sodium iodide in ... (Read 174 times)

09madisonrousseau09

  • Hero Member
  • *****
  • Posts: 559
on: Aug 23, 2018
Why is it important to use dry tubes for the reactions involving sodium iodide in acetone?

Question 2

In this experiment, why was sulfuric acid used to neutralize the sodium salt of naproxen rather than acetic acid?


sierrahalpin

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Aug 23, 2018
Answer to Question 1

Sodium chloride and bromide are very soluble in water. If there is too much water present, these products do not precipitate and it is not possible to evaluate the relative rates of reaction.

Answer to Question 2

Acetic acid, a carboxylic acid, has a very similar pKa to the carboxy group of naproxen. Using only one equivalent of acetic acid to neutralize sodium naproxen would result in a Keq of about 1. Therefore, in order to fully protonate naproxen with acetic acid, we would have to use a large excess of this material. On the other hand, sulfuric acid is a much stronger acid than a carboxylic acid and will fully protonate a carboxylate with only one equivalent.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

09madisonrousseau09

  • Hero Member
  • *****
  • Posts: 559
Reply #2 on: Aug 23, 2018
Thank you!


sierrahalpin

  • Sr. Member
  • ****
  • Posts: 329
Reply #3 on: Aug 23, 2018
Always glad to help...


« previous next »
 

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Reactions of Young Men and Women on Fasting Reactions of Young Men and Women on Fasting
Microtainer tubes. Microtainer tubes.
How to solve inequalities involving absolute values (Part 1) How to solve inequalities involving absolute values (Part 1)
The MyPlate icon reinforces important concepts of meal planning The MyPlate icon reinforces important concepts of meal planning
Water in Chemical Reactions Water in Chemical Reactions
An electrochemical cell is based on these two half-reactions An electrochemical cell is based on these two half-reactions
Video: Antidiuretic hormone (vasoconstriction, water reabsorption & sweat inhibition)

For a complete list of videos, visit our video library