Carboxylic Acids and Their Salts

This video tutorial explores the naming conventions for carboxylic acid salts, which are formed by deprotonating carboxylic acids. It explains the process of forming these salts, the equilibrium involved, and how the negative charge is stabilized. The video also covers the rules for naming these salts as metal alkanoates, using examples like sodium benzoate and sodium acetate to illustrate the concepts.

What is a carboxylic acid salt?

• A molecule with a COOH group

• A molecule formed by deprotonating a carboxylic acid

• A molecule with a hydroxyl group

• A molecule with a carbonyl group

What happens to the electrons when the oxygen-hydrogen bond breaks in a carboxylic acid?

• They are transferred to the hydrogen atom

• They are shared with the base

• They go onto the oxygen atom

• They are lost as heat

How is the negative charge stabilized in a carboxylic acid salt?

• By being neutralized by a proton

• By being localized on one oxygen atom

• By being shared over two oxygen atoms

• By being transferred to the cation

What is the naming convention for carboxylic acid salts?

• Metal alkanoates

• Metal hydroxides

• Metal carbonates

• Metal oxides

In the name 'sodium benzoate', what does 'benzoate' indicate?

• It is derived from benzoic acid

• It is a type of metal

• It is a type of base

• It is a type of salt

What is the structure of sodium benzoate?

• A sodium ion complexed with a hydroxyl group

• A sodium ion complexed with a deprotonated carboxylic acid

• A sodium ion complexed with a carbonyl group

• A sodium ion complexed with a methyl group

What is the common name for a two-carbon deprotonated carboxylic acid?

• Sodium ethanoate

• Sodium acetate

• Sodium propanoate

• Sodium butanoate

What is the IUPAC name for sodium acetate?

• Sodium ethanoate

• Sodium methanoate

• Sodium propanoate

• Sodium butanoate

Why is sodium acetate commonly used in DNA purification?

• It acts as a buffer

• It precipitates DNA

• It stabilizes proteins

• It enhances fluorescence

What suffix indicates a deprotonated carboxylic acid in IUPAC naming?

• -ic

• -oic

• -ol

• -ate