lab assignment 1

Lab Assignment Activity Unit 1 Katarzyna Nowinska Behavioral Health , University of the People BIOL 1121 : Biology 1 for Health Studies Gautam Krishnan , PhD November 27, 2023

Lab Assignment Activity Unit 1 1. Data Collection Tables a. Macro Mode No. Solution pH Nature 1. Blood 7.4 Basic 2. Chicken Soup 5.8 Acidic 3. Drain Cleaner 13 Basic 4. Soda Pop 2.5 Acidic 5. Hand Soap 10 Basic b. Micro Mode No. Solution pH H 3 O+ OH - 1. Blood 7.4 4.0 x 10 -8 2.5 x 10 -7 2. Chicken Soup 5.8 1.6 x 10 -6 6.3 x 10 -9 3 Drain Cleaner 13 1.0 x 10 -13 1.0 x 10 -1 4. Soda Pop 2.5 3.2 x 10 -3 3.2 x 10 -12 5. Hand Soap 10 1.0 x 10 -10 1.0 x 10 -4 c. My Solution Mode No. pH H 3 O+ OH - 1. 3 1.0 x 10 -3 1.0 x 10 -11 2. Question To calculate the pH of the solution, use the formula pH = -log(H O ) ₃ ⁺ Where (H O ) is hydronium ions. ₃ ⁺ Hydronium ions are the combination of a water molecule and a hydrogen ion, resulting in the formula, H O . Hydronium is the key to calculating whether a solution is acidic or ₃ ⁺ basic. In this case, the concentration of hydronium is 7.1×10 ² M. Using a scientific ⁻ calculator or a logarithm table and substituting this value into the formula, we get: pH = -log(7.1×10 ²) ⁻

References Lower, S. & Kahlon, A. (n.d.). Physical & Theoretical Chemistry. The LibreText. https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Map s