« previous next »

Author Question: Why is it important to use dry tubes for the reactions involving sodium iodide in ... (Read 181 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?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

It is important for new employees to know the location of all fire extinguishers. (A) Pull the pin ... It is important for new employees to know the location of all fire extinguishers. (A) Pull the pin ...
(a) In normal nerve conduction, sodium ions (Na+) enter the sodium channels along a neuron and ... (a) In normal nerve conduction, sodium ions (Na+) enter the sodium channels along a neuron and ...
An Enzyme in Action Enzymes speed up reactions in your body An Enzyme in Action Enzymes speed up reactions in your body
How many anions are in 10.0 g of sodium phosphate? How many anions are in 10.0 g of sodium phosphate?
0.300 moles of sodium nitrite are needed for a reaction. The solution is 0.450 M. How many mL ... 0.300 moles of sodium nitrite are needed for a reaction. The solution is 0.450 M. How many mL ...
Uniparental disomy can be produced by several mechanisms involving nondisjunction in meiosis, nondis Uniparental disomy can be produced by several mechanisms involving nondisjunction in meiosis, nondis
Video: Protein catabolism - deamination

For a complete list of videos, visit our video library