Innovating Science™ AP Chemistry Kits: Le Chatelier's Principle

Description

Includes

Materials for 15 groups: 25mL Hydrochloric Acid, 36% solution UN1789 (6); 25mL Sodium Hydroxide, 0.1N solution UN1824 (2); 25mL Bromothymol Blue, 0.04% solution (2); 10g Potassium Thiocyanate crystals; 200mL Potassium Thiocyanate, 0.002M solution (1); 25mL Ferric Nitrate, 0.2M solution (2); 50g Sodium Chloride crystals; 10g Sodium Phosphate, Dibasic, Heptahydrate; teacher's guide; and student copy masters

In this experiment, see Le Chatelier's Principle by observing physical changes to solutions as systems are stressed.

Le Chatelier's Principle is a qualitative rule that allows the prediction of the effect of temperature, pressure and concentration changes on chemical reactions. The principle states: A chemical system at equilibrium when stressed by external forces will adjust in such a way as to minimize that stress.

Specifications

• Certifications/Compliance: 49 CFR 173.4
• Color: White
• Grade: 7 to 14
• Age: 13 to 20
• For Use With (Application): To observe physical changes to solutions as systems are stressed
• Includes: 1 x 25mL Bromothymol Blue pH indicator solution 0.04%, 1 x 10g Potassium Thiocyanate crystal, 1 x 25mL Ferric Nitrate solution 0.2M, 1 x 200mL 0.002M Potassium Thiocyanate solution, 1 x 10g Sodium Phosphate, dibasic, 1 x 25mL concentrated Hydrochloric Acid, 36%, 2 x 25mL Sodium Hydroxide solution 0.1N, 1 x 50g Sodium Chloride, teacher's guide and student study guide copymasters
• Quantity: 1
• Dimensions (L x W x H): 6.75 x 5 x 6 in.
• Class Size: 15 Lab Groups
• Product Type: Le Chatelier Chemistry Kit