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Chem 104 lab experiments SUMMER 2025 Portage learning/Chem 104 lab experiments SUMMER 2025 Portage learningChem 104 lab experiments SUMMER 2025 Portage learningChem 104 lab experiments SUMMER 2025 Portage learningChem 104 lab experiments SUMMER 2025 Portage learningChem 104 lab experiments SUMMER 2025 Portage learningChem 104 lab experiments SUMMER

Purpose: The purpose of this experiment is to synthesize the carbon-containing organic compounds: aspirin, urea, and salicylic acid. Procedure: Experiment #1: Synthesizing Aspirin (acetylsalicylic acid) 1. 2 g of salicylic acid was added in a flask. 2. 5 ml of acetic anhydride was measured using a graduated cylinder. 3. The acetic anhydride was added to the flask with salicylic acid. 4. 5 drops of sulfuric acid was added to the flask. 5. The flask was placed in a hot water bath for 15 m...

Purpose: The purpose of this experiment is to see and understand the relationship between electricity and chemistry through redox reactions. This lab contains experiments on reactions with metals, interactions between electricity and chemical reactions, and creating a voltaic cell. Procedure: Experiment #1: Conductor with water, sugar, and potassium chloride 1. The conductor was placed in the beaker with water. 2. The reaction (no change) was recorded. 3. The conductor was taken out of th...

Purpose: The purpose of this lab is to learn about buffers and their ability resistant to pH change. We will examine how a buffer solution is composed as well as the relationship between pH and enzyme activity. Procedure: Experiment #1: 1. Two beakers were gathered and one beaker was filled up with water and the other beaker with the buffer solution. 2. Using a pH meter, each electrode from the pH meter was connected to each beaker. 3. The starting pH is around 7 in the pH meter. 4. A sc...

Purpose: The purpose of this experiment is to determine the concentration of ascorbic acid (vitamin C) in oranges, lemons, and limes by using a titration mixture of iodine, starch, and ascorbic acid, by reaching the endpoint and calculating the molarity. Procedure: Experiment #1: Vitamin C Concentration in Iodine 1. A sheet of weighing paper was placed on a balance and the balance was tared to 0 g. 2. 0.5 g of ascorbic acid was placed on the weighing paper and measured on the balance. 3....

Purpose: The purpose of this lab is to show titrations of different types of acid-base solutions. The types of titrations performed were standardization and determining the titration curve. The titrations were conducted to find the unknown concentration of a substance by adding a specific volume of a solution with a known concentration until the endpoint was reached with proof of a color change from an indicator. Procedure: Experiment #1: Standardization of NaOH 1. Weak acid potassium hydr...

Purpose: The purpose of these experiments is to determine the equilibrium constant, Kc, and to understand LeChatelier’s Principle and how variables, such as temperature or concentrations, can shift or reverse equilibrium reactions. Procedure: Experiment 1: 1. The titration setup contained a ring stand and a burette with the beaker placed under the burette. 2. Using a pipette, 10 mL of acetic acid and 10 mL of propyl alcohol were mixed in a flask. 3. 25 mL of water and several drops of...

Chem 219 Lab experiments 1-8 SUMMER 2025 Portage learning/Chem 219 Lab experiments 1-8 SUMMER 2025 Portage learningChem 219 Lab experiments 1-8 SUMMER 2025 Portage learningChem 219 Lab experiments 1-8 SUMMER 2025 Portage learningChem 219 Lab experiments 1-8 SUMMER 2025 Portage learningChem 219 Lab experiments 1-8 SUMMER 2025 Portage learningChem 21

The purpose of this experiment is to study the effects of concentration and temperature on the speed of a chemical reaction. From this, we will determine the rate of the chemical reaction. Procedure: Experiment 1: 2- + 3 (aq) (aq) (s) 2 3 (aq) 1) In a test tube, 10 mL of 0.1 M thiosulfate ion (S2O 2-) and 0 mL of water were mixed. 2) In test tube 2, 8 mL of 0.1 M S2O 2- and 2 mL of water were mixed. 3) In test tube 3, 6 mL of 0.1 M S2O 2- and 4 mL of water were mixed. 4) In test tub...

Experiment #: 8 Title: Synthesis of Methyl Orange and Investigation of Acid Base Indicating Properties Purpose: Is to synthesize the azo dye methyl orange and investigate its behavior as an acid-base indicator. Through the process of using diazotization and coupling reactions and develop an understanding of how molecular structure and conjugation affect the color and pH sensitivity of organic dyes. Procedure: 1. In a 600 mL beaker equipped w/a magnetic stirrer, prepare a solution of 5% ...