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pH lab pH notes pg. 20 pg. 21 pH- the measure of how acidic or basic a solution is. It is based on the hydrogen ion. When water is ionized: H2O H+ and OH acid neutral O 7 strong-------weak base 14 weak---------strong Acids- 1. Forms H+ ions in water. 2. Often taste sour. 3. Often corrosive. Bases- Neutral- 1. Form OHˉ ions in water. 2. Often taste bitter. 3. Often feel slippery. not acidic or basic ex. pure water is pH 7 Solution Dr. Pepper LV tap water Vinegar H2O2 Gatorade Shampoo Coffee Liquid soap Your pH guess Actual pH The average American today drinks over 600 servings of pop a year.*** Product Acid Low=BAD Sugar per 12 oz Pure Water Barq's Diet Coke Mountain Dew 7.00 (neutral) 4.61 3.39 3.22 0.0 10.7 tsp. 0.0 11.0 tsp. Gatorade Coke Classic Pepsi Sprite Diet 7-Up 2.95 2.63 2.49 3.42 3.67 3.3 tsp 9.3 tsp. 9.8 tsp. 9.0 0.0 Diet Dr. Pepper 3.41 0.0 Surge Gatorade 3.02 2.95 10.0 3.3 Hawaiian Fruit Punch 2.82 10.2 Orange Minute Maid 2.80 11.2 Dr. Pepper BATTERY ACID 2.92 1.00 9.5 0.0 Source: Minnesota Dental Association * The threshold pH for enamel dissolution is 5.5.