EXP 12: Properties of Carboxylic Acid & Salicylic Acid

Solubility of Carboxylic Acid in Water

Solubility of Carboxylic Acid in Water

What is the name of (Part A)?

Acetic Acid (CH3COOH), Benzoic Acid (C6H5COOH), Stearic Acid (C17H35COOH)

(Part A) What are the acids being tested?

Water

(Part A) What is added to each acid?

Soluble

(Part A) What is the solubility of Acetic Acid (CH3COOH) in water?

Slightly Soluble

(Part A) What is the solubility of Benzoic Acid (C6H5COOH) in water?

Insoluble

(Part A) What is the solubility of Stearic Acid (C17H35COOH) in water?

Acetic Acid (CH3COOH), Benzoic Acid (C6H5COOH), Stearic Acid (C17H35COOH)

(Part A) What is the order from most to least soluble?

As the number of carbons increase, the solubility decreases

(Part A) What can be said about the solubility of carboxylic acids?

Action of an Oxidizing Agent on the Carbonyl Group

What is the name of (Part B)?

Acetic Acid (CH3COOH), Benzoic Acid (C6H5COOH), Formic Acid (HCOOH), Oxalic Acid ((COOH)2)

(Part B) What are the acids being tested?

Potassium Permanganate (KMnO4)

(Part B) What is the oxidizing agent added?

Formic Acid (HCOOH) & Oxalic Acid ((COOH)2)

(Part B) Which acids underwent oxidation?

Brown

(Part B) What color did the reaction between formic acid (HCOOH) and potassium permanganate (KMnO4) yield before heating?

Reddish-Brown

(Part B) What color did the reaction between formic acid (HCOOH) and potassium permanganate (KMnO4) yield after heating?

Orange

(Part B) What color did the reaction between oxalic acid ((COOH)2) and potassium permanganate (KMnO4) yield before heating?

Colorless

(Part B) What color did the reaction between oxalic acid ((COOH)2) and potassium permanganate (KMnO4) yield after heating?

Carbon Dioxide (CO2)

(Part B) What is produced by both of the formic and oxalic acid reactions with potassium permanganate?

Reddish-Brown Manganese (IV) Oxide (MnO2)

(Part B) What is the color, name, and formula of the precipitate that forms from the reaction between formic acid and potassium permanganate?

Manganese Ion (Mn2+)

(Part B) Aside from carbon dioxide, what is the main product that forms from the reaction between oxalic acid and potassium permanganate?

Carbon Dioxide (CO2)

(Part B) What did oxalic acid become after being added with the potassium permanganate?

Preparation of Salicylic Acid Solution

What is the name of (Part C)?

Salicylic Acid (C6H4OHCOOH)

(Part C) In this part, the properties of what are being determined?

Reaction with Ferric Ions

What is the name of (Part C.i)?

Ferric Chloride (FeCl3)

(Part C.i) What is added to salicylic acid?

Ferric Salicylate (Fe(C6H4OHCOO)3)

(Part C.i) What is the product formed from the reaction between salicylic acid and ferric chloride?

Violet

(Part C.i) What is the color of the product formed from the reaction between salicylic acid and ferric chloride?

Reaction with Bromine Water

What is the name of (Part C.ii)?

Bromine Water (Br2 * H2O)

(Part C.ii) What is added to salicylic acid?

Slightly Yellow

(Part C.ii) What color is the solution after adding bromine water?

2,4,6-Tribromophenol (C6H2OHBr3)

(Part C.ii) What is the organic product formed from the reaction between salicylic acid and bromine water?

Reaction with Millon’s Reagent

What is the name of (Part C.iii)?

Mercury (II) Nitrate (Hg(NO3)2)

(Part C.iii) What is the name and formula of Millon’s Reagent?

Mercuric Salicylate (Hg(C6H4OHCOO)2)

(Part C.iii) What is the product of the reaction between salicylic acid and Millon’s reagent?

Red

(Part C.iii) What is the color of the product of the reaction between salicylic acid and Millon’s reagent?

Reaction with Soda-Lime

What is the name of (Part D)?

Soda Lime (NaOH & CaO)

(Part D) What is mixed with the salicylic acid?

Phenol (C6H5OH)

(Part D) Give the name and formula of the organic compound formed from heating salicylic acid and soda lime together.

True

(Part D) True or false: The reaction of salicylate acid with soda lime is a decarboxylation process.

Ester Formation

What is the name of (Part E)?

Ester

(Part E) What is produced from a reaction between a carboxylic acid and methyl alcohol?

Methyl Alcohol (CH3OH) & Concentrated Sulfuric Acid (H2SO4)

(Part E) What is added to the salicylic acid?

Methyl Salicylate (C6H4OHCOOCH3)

(Part E) What is the ester formed?

Minty

(Part E) What is the odor of the product formed from ester formation?