Carboxylic Acids And Acid Derivatives

Question

Arrange the following in increasing order of acidity and explain your order :

Formic acid, acetic acid, chloroacetic acid

Solution

Acetic acid < Fromic acid< Chloroacetic acid

Proton donors are acids. Chlorine is electronegative element, it attracts the electrons towards itself, as a result removal of proton from chloroacetic acid becomes easier. Incase of acetic acid, methyl group is electron doner. Therefore it increases electron density as a result removal of proton becomes difficidt. Formic acid does not have any donor or withdrawing group.

Some More Questions From Carboxylic acids And Acid Derivatives Chapter

Carry out the following conversions:

(i) Methyl chloride to acetic acid.

(ii) Benzene to benzoic acid

(iii) Ethanol to acetone.

Give balanced equations for the following:

(i) Glycerol is heated with oxalic acid at 110° C (383K).

(ii) Acetamide is heated with sodium hydroxide.

(iii) Acetone reacts with hydrogen in the presence of heated copper.

Draw the isomers of 2-hydroxy propionic acid.

Give an example (equation) for each of the following name reactions:

(i) Aldol condensation.

(ii) Reimer-Tiemann reaction.

(iii) Rosenmund’s reductions.

Give one example for each of the following name reactions:

(i) Hell Volhard Zelinsky (HVZ) reaction,
(ii) Clemmensen’s reduction.

Give one good chemical test to distinguish between the following pairs of compounds:

(i) 1 Propanol and 2 Propanol.
(ii) Oxalic acid and benzoic acid.

Complete the following statements by selecting the correct alternative from the choices given:

When oxalic acid is heated with glycerol we get: