Question

Modify the following three molecules so that they show the form that is dominant at physiological pH

Answer 1

Concepts and reason

The concept used to solve this problem is based on carboxylic acids.

Carboxylic acids are the compounds which contain in their chemical structure. These compounds are highly reactive towards the basic compounds due to their acidic character.

Fundamentals

Carboxylic acid can exist in different forms depending on the pH value of the solution. Usually at basic pH, these compounds exist as anions which are called carboxylates .

Part a

The carboxylic acids are deprotonated in order to form carboxylate anions at physiological pH. The modified structure of the molecule is as follows:

Part b

The carboxylic acids are deprotonated in order to form carboxylate anions at physiological pH. The modified structure of the molecule is as follows:

Part c

The carboxylic acids are deprotonated in order to form carboxylate anions at physiological pH. The modified structure of the molecule is as follows:

Ans: Part a

[Answer]
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Modified structure of the molecule is as follows:

Part b

[Answer]
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Modified structure of the molecule is as follows:

Part c

[Answer]
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Modified structure of the molecule is as follows: