Author Question: Why is it important to use dry tubes for the reactions involving sodium iodide in ... (Read 184 times)

09madisonrousseau09

  • Hero Member
  • *****
  • Posts: 559
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
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

sierrahalpin

  • Sr. Member
  • ****
  • Posts: 329

 

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

For a complete list of videos, visit our video library