3 Introduction What is pH? A measurement used in order to indicate whether a substance/mixture is acidic or basic.The negative logarithm of the hydrogen ion concentration.
4 ProcedurePART 1:Number the test tubes from Add 5 mL of each solution to each test tube.Test Tube 1: Most concentrated acidTest Tube 7: 0.01M NaCl solutionTest Tube 8: Least concentrated base.Add a few drops of indicator solution and observe the results.
5 ProcedurePART 2:Determine the pH range of the various substances and mixtures suggested by the instructor.Feminine Wash Tears Body Wash Sugar Sprite Alcohol
6 Results [H3O+] (M) [OH-] (M) pH Color 1 x 10-1 1 x 10-13 1 Dark red 2Red1 x 10-31 x 10-113Red orange1 x 10-41 x 10-104Orange1 x 10-51 x 10-95Yellow orange1 x 10-61 x 10-86Lighter yellow orange1 x 10-77Dark yellow8Yellow9Yellow green10Darker yellow green11Green12Blue13Dark blue/ purple
10 AquariumsSome fish can only live in a certain range of pH leve of water.An ideal pH for goldfish to live safely is
11 Commercial ProductsLiquid soap usually has a pH level of Having a high pH level makes the soap more anti-bacterial. Shampoo has a slightly acidic pH level since a more basic environment weakens the hair.
12 PlantsThe ideal pH living conditions for common fruits and vegetables is around Using limestone could increase the pH level of soil while using aluminum sulfate can lower pH levels.
13 Marine LifeCorals are very sensitive to the pH of the seawater. They only survive in pH. If the pH of the seawater drops or increases, the corals would eventually die.