« previous next »

Author Question: Why is it important to use dry tubes for the reactions involving sodium iodide in ... (Read 416 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?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

reactions of an ester with a carboxylate group to form an anhydride. The R group is the same in each reactions of an ester with a carboxylate group to form an anhydride. The R group is the same in each
Steady-state kinetic analysis of bisubstrate reactions Steady-state kinetic analysis of bisubstrate reactions
The continents were not always in their present positions. The position of the continents is importa The continents were not always in their present positions. The position of the continents is importa
The tubes and fins of the radiator core. The tubes and fins of the radiator core.
a and B Elimination reactions a and B Elimination reactions
An electrochemical cell is based on these two half-reactions An electrochemical cell is based on these two half-reactions
Video: Burn Animation

For a complete list of videos, visit our video library