Innovating Science™ AP Chemistry Kits: Ester Formation

Combines various alcohols with acetic and butyric acids to form esters, which are identifiable by their distinctive odors.

Supplier:  Innovating Science™ IS8005

Catalog No. S90730

Includes: Material for 15 groups: 25mL Acetic Acid, Glacial UN2789 (2); 15g Salicylic Acid; 25mL Octyl Alcohol (2); 25mL Methyl Alcohol UN1230 (2); 25mL Sulfuric Acid, ACS Concentrate UN1830 (2); teacher's guide; and student copy masters

Description

Carboxylic acids react with alcohols in the presence of a strong acid. This is an equilibrium reaction, which means both reactants and products are present at some concentration. For example, when 1 mole of acetic acid and 1 mole of ethyl alcohol are mixed, 0.667 mole of the ester and 0.667 of water are produced, and 0.333 mole of acid and 0.333 mole of alcohol remain at equilibrium.
The yield of ester can be increased either by removing one of the products of the reaction as it is formed or by increasing the concentration of one of the reactants. The normal procedure is to remove water using the dehydrating agent sulfuric acid, which also acts as the catalyst.

Specifications

• Certifications/Compliance: 49 CFR 173.4
• Color: White
• Age: 13 to 20
• Includes: 2 x 25ml acetic acid, 2 x 25ml n-butyric acid, 1 x 25ml n-butyl alcohol, 1 x 25ml octyl alcohol, 1 x 25ml methyl alcohol, 1 x 25ml ethyl alcohol, 1 x 25ml concentrated sulfuric acid, glass droppers, teacher's guide and student study guide copymasters
• Dimensions (L x W x H): 9 x 6 x 4 in.

• Product Type: Ester Formation Chemistry Kit
• Grade: 7 to 14
• For Use With (Application): Combines various alcohols with acetic and butyric acids to form esters, which are identifiable by their distinctive odors
• Quantity: 1
• Class Size: 15 Lab Groups