Elephant Toothpaste & Hazmat Suits | Bad Scientists HD

**ABSOLUTELY DO NOT DRINK HYDROGEN PEROXIDE! SERIOUS INJURY OR DEATH MAY RESULT!** Water, not hydrogen peroxide, was consumed in this video stunt. We performed this reaction and created this video for our final project for AP Chemistry. Members: Stephen Mayfield, Dustin Pease, and Joshua Mayfield Safety: Wear Hazmat Suits, Gloves, and Goggles/Gas Masks Oxygen bubbles are produced during the reaction so no open flames will be present during the reaction, only at the end when we all are prepared to ignite the foam. The reaction produces heat because it is exothermic so we will back away during the reaction. Purpose: To create foam from hydrogen peroxide in order for elephants to brush their teeth. Materials: - 100 mL of 30% Hydrogen Peroxide (H2O2) solution - 25 mL of Dishwashing detergent - 500 mL Erlenmeyer flask - Food coloring - Saturated Potassium Iodide (KI) solution (15 g KI in 5 mL of warm water) - Matches Procedure: 1. Prepare workspace outside. 2. Pour in 25 mL of detergent in the flask. 3. Pour 100 mL of 30% Hydrogen Peroxide in a 500 mL Erlenmeyer flask. 4. Add about 10 drops of food coloring to the flask. 5. Prepare the Potassium Iodide solution by adding 15 g of KI and 5 mL of warm water. 6. Add the KI solution to the flask. 7. Touch the lighted match to the foam to indicate the presence of oxygen. Disposal: The foam will be rinsed with water in the grass. Chemistry: In the reaction, hydrogen peroxide is decomposed to oxygen gas (O2) and water (H2O). The Iodide ion acts as a catalyst to rapidly increase the rate of decomposition of Hydrogen Peroxide. The IO- acts as an intermediate in the reaction. The soap captures the oxygen gas and produces bubbles. The reaction is exothermic. (ΔH°=-196 kJ/mol) Overall Reaction: 2H2O2 (aq) ⟶ 2H2O (l) + O2 (g) Step Reactions: H2O2 (aq) + I- (aq) ⟶ H2O (l) + IO- (aq) H2O2 (aq) + IO- (aq) ⟶ H2O (l) + O2 (g) + I- (aq) Do not try this at home!